At first, Marin didn't know about the popularity of honeycomb coal in Daming, but he soon knew. Because, Kong Tai sent a batch of local products from Taiwan. At the same time, the news of honeycomb coal was also returned......

As the governor of Taiwan, Kong Tai organized a large-scale army of soldiers and horses, mainly rattan soldiers. Once the rattan soldiers had been trained, Kong Tai ordered them to begin their expansion in the northern part of the island.

In the face of thousands of rattan soldiers and musketeers, the aborigines of Taiwan Island are no match at all. No matter how brave they are, it will be difficult for them to break through the defenses of the rattan players. And if they hit each other from a distance, they couldn't beat the musketeers...... Moreover, the loud sound of the musket also has its own intimidating effect......

Therefore, in the past two years, Kong Tai has dispatched troops and horses, and he has already hit the coast of Tainan in later generations. And a Fanmin tribal alliance of the predecessor of the "Potbelly Kingdom" in later generations was also defeated by Kong Tai's expeditionary force. The two sides fought a big battle at the mouth of the Dajiaxi River in Taichung, and Kong Tai dispatched 2,000 rattan soldiers and 100 musketeers. And the fans of the Big Belly Alliance made up more than 4,000 strong men and took the initiative to attack the colonial army that had just landed. However, their attack failed to break through the defenses of the rattan soldiers, and some of the bravest warriors who rushed ahead were killed by the musketeers at close range, and then the fans of the Potbelly Alliance were defeated and fled. Subsequently, many of the defeated Potbelly Alliance's fans were forced to flee to the depths of the jungle on the island. Kong Tai did not dare to go deep into the jungle easily, so he occupied the coastal area and the downstream riverside area of several large streams on Taiwan Island, began to develop slowly, and built forts, steadily and steadily.

Subsequently, Conté began large-scale development in the occupied territories. First of all, Marin's most important thing is naturally the oil produced from the pit. Although the daily output is only about 20 kilograms, it has accumulated about 15 tons of oil in more than two years. Of course, the ship has been sailing to Panama City since last year, bringing back only more than 7 tons of oil, that is, a year's production. As for the second year's production, it hasn't been accumulated enough to be sent back.

Marin was also very happy to see so much oil. After all, more than 7 tons of oil, even if the gasoline output rate is only 10 percent, can refine more than 700 kilograms of gasoline. It is used to burn the enemy army, and it can be used freely.

With this oil, and the fact that the Galician region of Poland is also producing oil, gasoline will definitely be enough in the future. So, Marlin decided to start developing a bed crossbow that could fire a glass bottle filled with gasoline.

In those days, the ships were made of wood. If the wooden boat had been made thicker, it might have been able to withstand the bombardment of iron ball shells. After all, thick planks are also very strong. However, wooden boats are definitely afraid of fire. In particular, gasoline burns this flame that cannot be extinguished by water.

Originally, Marin had intended to try to use a catapult throwing machine to throw improvised cocktail cocktail cocktails at enemy ships. However, after experimentation, Marin found that the trebuchet really relied on luck to hit the bottle on target......

So, he thought of the bed crossbow......

The heavy bolts of the bed crossbow were made to resemble the diamond monkeys of later generations, and Molotov cocktails, which were filled with gasoline cocktails, were tied to the shafts. When the bolt was inserted into the enemy at a distance of several hundred meters, the glass bottle of gasoline tied to the shaft of the arrow broke due to the impact, and the gasoline flew on the enemy ship due to inertia...... Next, the rocket is fired with a bed crossbow...... After this set, the enemy wants to keep the ship, which is simply wishful thinking......

Unless, the other party learned of the existence of gasoline in advance and prepared a sand cover to extinguish the fire. Otherwise, if you want to use the conventional watering method to extinguish the fire, you will definitely die an ugly death......

It's just that because oil production is very limited at the moment. Therefore, Marlin generally does not use gasoline easily. This weapon of mass destruction is sacrificed only when attacking the fortified fortress of the wooden gate, or when a decisive naval battle is fought against the enemy......

……

In addition to the oil produced by the sulfur pit, the product of Taiwan Island that Ma Lin values most is probably mothball. In the northern part of Taiwan Island, at this time, the primeval forests were full of camphor trees. After Kong Tai sent troops to occupy the northern coast of Taiwan Island, he quickly relied on Ming craftsmen to cut down a lot of camphor trees, and refined hundreds of catties of camphor and sent them back.

After getting his hands on these powdered natural camphors, Marlin was very excited. Because, his research on smokeless gunpowder can continue......

Previously, Marin only made the most basic smokeless gunpowder, B gunpowder, that is, nitrocellulose mixed with 2% paraffin wax for passivation, and obtained the first smokeless gunpowder in history.

However, the passivation effect of paraffin wax is average, and the smokeless gunpowder that comes out is easy to spontaneously combust, resulting in very serious accidents (in history, there was a French steel battleship that was sunk by the spontaneous combustion of B gunpowder, and the losses were very heavy). Therefore, during World War II, everyone began to use more advanced passivating agents such as phenylenediamine to passivate nitrocellulose.

But Marlin doesn't know chemistry and doesn't know what phenylenediamine. Therefore, he can only use the most powerful natural passivator - camphor......

Originally, in history, Nobel, the king of explosives, used camphor as a passivating agent to develop Knott's smokeless gunpowder. Unfortunately, his invention was a little late and was born at the wrong time. The equipment for the production of gunpowder is ready, will it adopt your new gadget? Then, Nobel's invention was shelved until the British, learning from Nobel's ideas, plagiarized his idea......

……

Then Marin began to improve smokeless gunpowder himself. He first used the old method to get nitrocellulose particles containing 2% paraffin (the specific process is not mentioned, so as not to be crabbed like in Chapter 848). After obtaining the granular nitrocellulose, Marlin dissolved the camphor with alcohol and soaked the granular nitrocellulose in an alcohol solution of the camphor (nitrocellulose is insoluble in alcohol). When the alcohol evaporates, the camphor coats the surface of the nitrocellulose particles, forming a thin film that hinders the rapid combustion of nitrocellulose......

Of course, for the specific concentration, Marlin is not sure. So, he made dozens of camphor alcohol solutions of different concentrations. Then, the effect of each passivated nitrocellulose is tested one by one.

Then, several testers tested the effect of dozens of smokeless gunpowder on the shooting range. After several days of testing, Marlin finally got a good match.

Subsequently, Marin used this passivated smokeless gunpowder as the standard propellant of the single-headed projectile. Later, in key battles, single-headed bullets all used passivated smokeless gunpowder as propellants. This kind of gunpowder is powerful, and after camphor passivation, the safety is also greatly improved, and there is no fear of the shooter being killed by accident......

In short, the batch of camphor sent back by Kong Tai can be regarded as a great help to Marin......