Luo Zhaoyun took advantage of the victory to pursue and kill, this time, he did not seek to advance steadily, only to kill the enemy, to give Tubo a bloody lesson, and hit them with a psychological shadow. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

chased for hundreds of miles, slaughtered the outdated and scattered Tubo soldiers, and pushed them all the way to a checkpoint pass in Raohe County.

This was previously the Sui army stationed to defend against the Tibetan attack, and the last time the Tibetan army repelled Mai Jicai's team here and seized this place.

And at this moment, Luo Zhaoyun chased all the way and drove Tubo back here, and the next step was to attack the mountain pass.

"Fix the place, dig trenches and set up camp." Some of the lieutenants of Yu Hou each passed the word to the team of 1,000 people.

The Sui army in the northwest was well-trained, and after a whole day of pursuit, they were also exhausted and began to camp and rest.

This battle was very painful, whether it was an ordinary cavalry, or a Modao Formation, and a Yanjia elite cavalry, they all achieved great results.

The soldiers and horses that caught up at the moment were only cavalry, and they were not suitable for attacking the city again, so Luo Zhaoyun was not in a hurry, but waited for the arrival of the infantry phalanx tomorrow, and used convenient siege equipment, trebuchets, fire urn shells, etc.

Another point is that the rough black powder has been developed, according to Luo Zhaoyun's chemical knowledge in later generations, understand that the composition of black powder is potassium nitrate, sulfur and charcoal, commonly known as "one sulfur, two nitrate and three charcoal", he sent people to look for these raw materials many years ago, and Yanyun Fort in Zhuo County has long been in research and development, but it has not been leaked to the outside world, and it will not be used prematurely, and it will be stolen by others, so he is prepared.

The manufacture of black powder was not as complicated as imagined, but the reason why it appeared in the Song Dynasty was because the previous dynasties did not pay attention to this matter, and even no gunpowder craftsmen did a lot of research in this area.

It's like Newton saw an apple fall to the ground and discovered gravity, but the ancients knew that the apple fell to the ground, but they didn't continue to study it further.

In the pre-Qin period, some alchemists touched the initial prototype of gunpowder, which was just a furnace during alchemy, but it did not spread and was valued by the current dynasty. During the Wei, Jin, Sui and Tang dynasties, there were also fireworks, which contained some ingredients that constituted gunpowder, but in terms of blasting power and stability, they could not reach the level of black powder, and they did not think of continuing to excavate and develop them for military warfare.

Luo Zhaoyun, as a traverser, mastered this theoretical knowledge one step earlier, sent people to practice, and finally developed it one step earlier, but the stability still needs to be tested in a wide range of actual combat.

He plans to use it for the Tubo people this time to deter these plateau barbarians, and the news will not spread, killing two birds with one stone.

In the future, he didn't plan to use it to deal with Xue Ju, Tang Bi, Liang Shidu and other anti-kings, kept it secretly, didn't let it be exposed, and waited for a decisive battle with Li Tangjun outside Daxing City, so that he could really take it out as a killer weapon.

Because Luo Zhaoyun has always regarded Li Tang as the primary enemy, he did not dare to be careless, after all, in history, it was the two founding fathers and sons who had the fortunes of the country and became a historical fact, and he didn't know if he could reverse history, so he kept black powder, which was his hole card, attacked Daxing City, used black powder, defeated the Tang army, and solved the enemy.

It was already late at night, and Luo Zhaoyun sent his Chinese soldiers and guards to defend the camp, so that the officers and men of the three armies who had been fighting on the front line for a day could rest and sleep peacefully.

Gardonzan knew that the Sui army was exhausted and wanted to counterattack, but the 20,000 horses under his command were even more unbearable, not only tired, but also timid, and the garrison left behind was only three or four thousand people, and two thousand troops were sent to form a death squad to attack the Sui army camp at night.

However, Luo Zhaoyun had already prepared, scattered a lot of scouts and special forces, blocked and transmitted messages, and the defense army resisted in time, so that the sneak attack did not succeed.

The next day, Xue Wanqian and Mai Jicai came with troops to reinforce them, and they fought against the right army of Tubo yesterday, and defeated each other in a bloody battle. It was only 1,000 enemies killed, 800 self-losses, and the vanguard army suffered a lot of losses.

After listening to the report, Luo Zhaoyun nodded slightly, the Tubo soldiers are like Turkic soldiers, individual soldiers are fierce, and their combat power is not bad, and they will be hit hard when they encounter the ingenious formations and advanced weapons of the Central Plains.

Xue Wanqian has the use of ten thousand invincibles, personally led the army to charge, using the sharpness of weapons and crossbow arrows, a fierce battle, and finally defeated the Tubo cavalry, but the soldiers under his command also suffered a lot of casualties, in comparison, the casualties were four or six, the Tubo six, and the Sui army were four, which was already a very good record.

"Wait for the infantry to arrive and conquer the pass!"

"Young marshal, why don't I take a group of men and horses, bypass the mountains and rivers, and go to the road they must pass through to ambush them?" Xue Wanqian boldly proposed.

Luo Zhaoyun pondered for a moment and nodded in agreement: "Okay, the number of people can't be large, it will attract attention, you take three thousand light horsemen, bring enough crossbow arrows, etc., and set up an ambush in the mountain col and dense forest belt on the road you must pass." ”

"The last general understands!" Xue Wanqian gave up his hand, immediately counted the people and horses, and led people to bypass this mountain area, insert it into the Tubo border fortress, and intercept and kill.

Mai Jicai took the initiative to ask Ying: "Young marshal, this Xiongguan was lost by the last general, and the last general wants to recapture it in person. ”

Luo Zhaoyun glanced at him and said, "Okay, when attacking the city pass, you take the lead." ”

"Thank you, Boss!" Mai Jicai smiled and fell here, trying to regain his glory here.

A day later, 15,000 infantry phalanx arrived, installed siege equipment, assembled stone-throwing vehicles, erected ladders, etc., and launched a general attack.

More than a dozen trebuchets, threw out the ceramic fire urn, exploded at the head of the city, because of the filling of a little black powder, the power became greater, the iron pillar, the ceramic pieces flew like a rainstorm pear blossom, injured the face and body of the Tubo soldiers defending the city, they had too little protective armor, all were beast skin armor, etc., and the iron armor was very little, so they could not prevent these small explosives.

Puff puff!

The guards at the head of the city were constantly injured, screaming and wailing all over the field, although they did not hurt people's lives, but they suddenly made people lightly and seriously injured, and directly lost their combat effectiveness.