Zhao Yu was also a little angry, he thought about a very simple battle, but he didn't expect to encounter such a thing at the beginning of the fight. However, to Zhao Hao's slight relief, the dragon ship that was hit was extinguished in time to extinguish the fire, and the warship was damaged, but it did not sink; The other was not so lucky, they wanted to rescue the ship, but the fire was too big, and they wanted to crash into the enemy fleet and die with it, but they had to abandon the ship under His Majesty's strict orders.

But by this time it was too late, and the crew did not even have time to put down the lifeboat, but just ignited the flowering bullet and threw it into the ammunition compartment before jumping into the water to survive, although several people were injured, they were rescued in time, and they became the first sunken dragon boat witnesses. To Zhao Hao's satisfaction, these crew members did not forget to destroy the ship in time, so that the secrets of the ballista and flowering shells could be hidden for a longer time.

The Sheji was armed with a large number of ballistas, and the fire was immediately strengthened after it joined the shelling, and several vehicles and ships of the enemy's forward fleet were hit under the heavy bombardment, but in order to prevent the fuel tanks on it from igniting, solid bullets were used, so that although the superstructure of the enemy ship was smashed into a mess, it was not sunk despite heavy casualties, and still advanced forward.

Seeing this, Zhao Yu knew that the power facilities of the enemy ship had not been destroyed, so he ordered the gunboat to attack the enemy ship paddle wheel, but the front target of the paddle wheel was small, and it was covered by the splash of water, so it was not so easy to hit, so it was still difficult to damage it. However, this also blocked the momentum of the enemy's attack, and bought time for the ships behind to re-array.

"Your Majesty, the Han command has let my ship retreat into the Chinese army!" Zheng Yong replied at this time.

"It is not possible to fight like this, so that not only will we not be able to surround the enemy, but we will be in danger of being surrounded by the enemy!" Zhao Yu didn't answer whether he was or not, but muttered. The situation before us is that the enemy is outnumbered, and the enemy has the advantage in both the number of ships and the number of troops. Now you only have the advantage in firepower, but you are in a state of countercurrent, if it is not a problem on weekdays, but it can be restrained by the enemy's 'golden juice cannon', which is inevitably a bit of a cocoon.

"Your Majesty, the lake is vast, which is convenient for us to maneuver, and when the tide level is stable, our firearms will be able to exert their might!" Zheng Yong saw that His Majesty's face was gloomy, his brows were furrowed, and he hurriedly said with relief.

"The enemy's vehicles and ships are faster, and they are more mobile than most of our warships, so I'm afraid we won't be able to wait until then." Zhao Yu waved his hand.

"Your Majesty, if you don't lead your subordinates to block the attack, desperately drag the enemy army!" Zheng Yong thought about it too, and turned to say.

"No, it's not to the point of desperately!" Zhao Yu shook his head, he had always been unwilling to do the deal of killing a thousand enemies and losing eight hundred, and he held a telescope and tried to find the flaws of the enemy army.

"Your Majesty, withdraw!" The enemy's vehicles and ships opened the battle line, and the small vehicles and ships took advantage of their flexibility to evade the shelling in an evacuated formation and outflanked the Sheji, and they also saw that this big ship was unusual. At this time, the ship was facing the enemy on the side side, and it was inconvenient to turn, Zheng Yong urged again.

"You command the imperial ship to evacuate, rendezvous with Dong Tong, arrange a defensive line to block the enemy, and I will go to the Warrior!" Zhao Yu put down the binoculars, and without waiting for Zheng Yongduo to say, he waved to Chen Dun and walked towards the gangway, knowing that the Warrior was leaning on the starboard side of the Sheji, in case of an emergency, he would evacuate.

"Your Majesty......" Zheng Yong didn't expect the little emperor to make another mistake, and wanted to persuade him again, but he didn't give himself a chance at all, and Chen Dun didn't say help, but made a grimace at him and followed His Majesty, he helplessly watched His Majesty transfer to the Warrior, and ordered the ship to turn around and sail north......

Zhao Yu boarded the Warrior, and the dragon boat detachment of the Guardian Navy immediately followed, and after driving some distance to the east under his command, he turned to the west and inserted the gap between the enemy's forward army and the Chinese army. He had just discovered the flaws in the enemy's army, and the enemy's front army was advancing so fast that it had left its middle army and rear army far behind, so to speak, it had been disjointed.

In addition, Zhao Yu also found that the car and ship in addition to the paddle wheel also has a defect, because of the style of the sand boat it uses, the stern building is much higher than the bow tower, so that it is easy to place the tail rudder, so there can not be arranged large weapons such as shooting rods and stone throwers, it should be said that the weakest place in defense. The existence of defects indicates that there is value that can be exploited.

"Hold down the wake of the enemy's command ship in front!" As soon as Zhao Yu got on the boat, he sat behind the command platform, and when the dragon boat was inserted into the enemy formation, he turned the corner and immediately ordered.

"Yes, Your Majesty!" When Wang Meng saw His Majesty sitting there, he automatically sent the command to him, and immediately conveyed the order. He knew His Majesty's intentions, the speed of the enemy's chariots and ships was equal to that of his own dragon ships, and it was not easy to catch up with them, and holding them down would reduce the resistance to breaking the waves and increase the speed of the ship.

"Full speed ahead, bow guns loaded with solid shells, aim at the stern wheel of the enemy ship!" Zhao Hao ordered again.

The command ship of the army in front of the enemy is a large vehicle ship with 23 wheels, and Zhao Hao wondered at first, the paddle wheels are all in pairs, how can there be a singular number? But when he made a detour back to the back of the enemy ship, he saw that there was a huge oar under the empty end of the stern. In addition to being a former military general, he also found that there were problems with the design of the vehicle and ship, which was of course limited by the level of ancient science and technology.

The large car ship in front of you throws away the tail wheel is 22 cars, a total of 48 wing wheels, the length of the 30 zhang long car ship is less than 100 meters, the length of the waterline is estimated to be about 70 meters from the length of the ship, except for the bow and stern due to the arc and anchor chain, winch, rudder, etc.

Because the paddle wheel of the vehicle and ship is an efficient and continuous movement of the paddle blades, so the over-dense wheel spacing will reduce the efficiency of each wheel, that is to say, many paddle wheels are indiscriminately filled in it, because the front paddle wheel rotates fast, the water flow is rapid, and the paddle wheel behind does not have much need to do work, and the water flow is sometimes faster than the speed of the paddle wheel behind, so the over-dense wheel spacing not only can not accelerate the ship, but affects the speed of the ship, so that the effect of the paddle wheel cancels each other. And in order to remove this obstacle, it will not be offset unless the chakra behind it always rotates faster than the chakra in front of it.

However, with the knowledge level of the ancients, they could not realize what the problem was, and thought that the only way to increase the speed of the ship could be increased by increasing the diameter of the wing wheels or the number of paddle wheels, but it was counterproductive, which would not only further reduce the speed of the ship, but also increase the physical exertion of the sailors. However, Zhao Yu was a professional in this field, and he knew these common sense things at a glance, so he targeted the enemy command ship that was slower and landed behind.

"Shoot!" The Warrior drove down at a rapid pace and soon entered the range of the ballista, and Zhao Yu gave the order to shoot.

'Bang! 'Half of the tail wheel of the enemy ship was hidden under water, and it was not easy to hit, and the stone projectiles fired from the bow cannon were one of the two. A stone bullet smashed a large hole in the tail wheel, and the huge impact force broke the central shaft; The other pierced the aft deck of the enemy ship, which was so small that the men who were pedaling the wheels in the cabin could not avoid it, and they were knocked down in a string and let out a terrible cry.

"Keep shooting!" The stern wheel of the enemy ship was destroyed, the men suffered heavy casualties, and the speed of the ship slowed down suddenly. Zhao Yu was unforgiving and ordered to continue the pursuit.

"Drop the guard, lower the watchtower, raise the periscope!" The enemy was hit even more, and no matter how stupid he was, he knew that he had to fight back, but those slapping rods and stone throwers were blocked by the stern and were difficult to use, so they fired crossbows with their crossbows in an attempt to block the dragon boats. Seeing that the arrows were coming like locusts, Wang immediately ordered the porthole guard in front of the command platform to be lowered and the watchtower to avoid casualties.

"Your Majesty, a hundred paces away from the enemy ship!" Guantong hand back through the periscope back report.

"Reload Molotov cocktails!" Zhao Yu received the report and ordered.

"Reload Molotov cocktails!" Immediately on the second floor, a sergeant repeated the command, and they opened a cover in the bow, revealing four iron pipes about three feet long and four inches in diameter, with narrowed mouths, and then filled four closed copper rounds into them, and repressed the caps, revealing only the fuses on the outside.

"Reloaded!" The sergeant reported back.

"Seventy paces away!" Guantong reported again.

"Lower the speed of the paddle, ten steps and one report!" Zhao Hao said in a deep voice, and at this time, not only could he hear the crackling sound of the falling arrows hitting the cabin board, but also a few huge crashing sounds, he frowned.

"Fifty paces from the enemy ship!"

"Forty paces from the enemy ship!"

"Ignition launch!" Zhao Hao ordered.

"Ignition!" The sergeant in the bow of the second deck immediately gave the firing order, and one of the soldiers lit the fuse and immediately retreated to the side, only to hear a muffled sound from it after a few breaths.

"Twenty paces away from the enemy ship, hit the stern of the enemy ship, and start a fire!" The lookout shouted with excitement in his voice.

"Five points on the left rudder, ajar porthole!" Zhao Yu received the report and issued two orders one after another.

"Your Majesty, the enemy ship has burned, and now it has also avenged our revenge just now." The porthole guard was raised, Wang Meng looked out, and saw that the enemy command ship was already in flames, and the entire tail had fallen into a sea of fire, and the enemy soldiers on the ship jumped into the water one after another to survive, making a mess.

"Three points on the right side, full speed ahead, bow gun fire!" Worthy of the enemy ship that caught fire, Zhao Yu ordered again, and he only had time to peek at the enemy ship shrouded in fireworks, and secretly breathed a sigh of relief in his heart, it seemed that the flame launcher he had made up was quite useful.

The use of fire in warfare is likely to go hand in hand with war, and the flamethrower predates muskets and artillery, as early as the seventh century AD, when the Byzantines used a liquid incendiary called "Greek fire" in naval battles with the Arabs. This incendiary agent is usually encapsulated in wooden barrels and used by a hand-cranked pump to spray it through a pipe to enemy ships.

Zhao Hao has also been pondering the formula of 'Greek fire' and thinking about the way to launch it in the confrontation with the enemy. But he was not able to restore the magic of Greek fire, nor did he have access to a smooth source of fire oil, and of course he could not sprinkle fire oil into the sea like water as generously as the Byzantines. So he had to find a new way to do it cost-effectively, using a new method of spraying.

In this era, in addition to the method of spraying fire oil with hand pumps by the Byzantines, the Song Dynasty also invented a firing weapon fueled by fire oil - fierce fire oil tank. It uses boiled copper as the cabinet, there are four feet under it, there are four copper pipes on it, the pipe is transversely placed on the pump, and the oil tank is communicated, and each time the oil is filled with about three catties. The front of the cylinder is equipped with a fire tower, which contains the leading gunpowder. When firing, use a red-hot cone to ignite the ignition powder in the fire tower, and then pull the pump vigorously to compress the air into the oil tank, so that when the fire oil is sprayed out through the fire building, it ignites when it is heated, and becomes a flame, which is used to burn the enemy and burn the battle equipment, or burn the pontoon bridge and battleship during the water battle. In addition, there is a small flamethrower used for city defense and water warfare, and a copper hoist is used instead of an oil tank to facilitate carrying and moving.

However, no matter which launch method, there is a fatal weakness, that is, the distance of the jet is too close, and the maximum distance that can be driven by manpower is not as good as the number of zhang. After several failed experiments, Zhao Yu thought of the firing method of modern flame launchers, in fact, there are two types of this part: one is the gas produced after the combustion of a certain amount of gunpowder; One is to carry another compressed gas cylinder to push the oil outward with high-pressure gas. However, there is a mainstream development direction with compressed gas propulsion.

Zhao Yu knows that using compressed gas as the power is a dead end in this era, neither materials nor equipment can do it, but it is still possible to use gunpowder as the thrust. So after several studies and many experiments, he created the Great Song version of the flame launcher, and the whole equipment was divided into two cylinders, inside and outside. The function of the outer cylinder is to fix the inner cylinder, and use the closure at the top to increase the pressure and increase the launch distance.

The inner cylinder is more complicated, it is a closed cylinder, the bottom is equipped with a powder bag, the middle is a piston, the top layer is the oil oil, and then the top is closed with colloid, and the bottom of the inner cylinder has a fire hole and a fire tube for ignition. When firing, the two sleeves are combined together, the inner cylinder is ignited, and the high-pressure gas generated after the gunpowder is burned pushes the piston, pushing the oil from the inner cylinder to the outer cylinder, and shoots out through the tightened nozzle, at this time, the flame discharged from the ignition tube ignites the oil and gas, forming a fire dragon of about ten zhang.

"Bow fire!" The Warrior turned to a lagging medium-sized ship and launched it into its stern, which had no stern wheel, but the rudder was in it, and when the rudder plate was destroyed, the ship, which was out of control, became a wave drifting on the lake, and the speed could not be faster anymore.

"Prepare to ramble!" The rudder of the ship was destroyed, the enemy ship in front slowed down, and Zhao Yu came down again to speed up and catch up. Looking at the rapidly approaching dragon boat, the enemy troops above panicked, their bows and arrows were firing wildly, and some soldiers drew their swords and shields to prepare for close combat.

"Collect the oars, ram!" When the distance was less than twenty paces, Zhao Yu gave the order to collide, and everyone hurriedly held on to the fixed objects around them, watching the two ships approach quickly, and then the hull of the ship shook, and the angle of charge pierced into the enemy ship......