Needless to say, the biggest hero of this capture of Daliang City was Xia Xue, and single-handedly killed the famous Sui army general Sang Xian, Xia Xue declared a big shock, and the reputation of Changsun Xue spread all over the Yellow River. It is even rumored that Changsun Xue is a fairy who can call the wind and rain, protect the Tang army with fire avoidance spells, and break Sang Xian's fire attack strategy, thus defeating the Sui army.

In fact, according to Sang Xian's characteristics, Xia Xue knew that he would not be indifferent when he learned that the Tang army was going to attack the Heyang granary. And it happened that day that I found that the wind direction was towards Heyangcang, in autumn and winter, the weather was dry and dry, and I just went to Heyangcang to pass through the Grand Canyon more than 30 miles long overgrown with weeds and shrubs. Xia Xue guessed that the brave and resourceful Sang Xian would definitely think of a fire attack strategy, so he planned and let Li Shimin lead 7,000 elite soldiers as bait to cross the Daliang River and make a sneak attack on Heyang Cang. However, he secretly asked the army to carry a few pieces of cloth and a jug full of water when they set out. Then he told Li Shimin to enter the Grand Canyon about four miles away, and hurry up and ask the soldiers to clear and cut down all the weeds and shrubs on the canyon road and near the valley, and at least clear a distance of more than 500 meters as a firebreak to isolate wildfires. The width of the general fire isolation zone is 100 meters enough, and she asked Li Shimin to clear 500 meters, which is 500 big steps. Since the ancients did not know rice, an adult step is about 65 centimeters, she said that let a tall soldier take a big step is counted as one meter, such a big step must be about the same as one meter.

Such a wide isolation fire strip is a big fire, of course, it will be fine. However, in order to prevent the soldiers from being stunned by the smoke, because Xia Xue knew that the number of people choked to death by the smoke in the fire was 4-5 times that of the burned to death. She told each soldier to quickly wet the cloth they carried with him when he saw the fire and smoke at the mouth of the canyon, cover his mouth and nose, reduce the inhalation of smoke, and climb to the ground, because the hot air rises, and the smoke is thinner in the air layer 30 centimeters close to the ground.

Even the war horse also covered the horse's mouth and nose with a wet cloth and let them lie down to reduce the damage of the war horse. In order to deceive Sang Xian, after the Sui army set fire to the mouth of the canyon for a period of time, he pretended to let some soldiers with loud voices let out all kinds of screams of being burned.

Among the 7,000 elites, there were only 3,000 cavalry, because the Tang army was still very scarce at that time, and most of them were infantry. When Xia Xue asked Li Shimin to enter the Grand Canyon quickly, he divided the cavalry into three groups, each group of 900 cavalry, and led by himself, Ouyang Yong and Ouyang Qian, to quietly detour and lurk near Daliang Mountain at night. The other two roads were led by two generals to quietly lurk on the left and right of the Grand Canyon ten miles away, and after seeing the fireworks rising in the direction of the canyon for half an hour, they immediately went to the mouth of the canyon to attack the Sui army, taking advantage of the night to create the illusion that the Sui army was surrounded by the army, causing the Sui army to panic, so that they had no intention of fighting and fled.

Li Shimin personally led the remaining 300 cavalry and 4,000 infantry into the Grand Canyon to lure the Sui army to come and set fire. Then when the fire passed, when the Sui army entered the valley to search, it suddenly attacked, and it would definitely defeat Sang Xian's army.

Let the eldest grandson Wuji lead 400 infantry to lurk in the bushes and grass near the north bank of the Daliang River early, and wait for Sang Xian's army to cross the Daliang River from the north bank to the south bank on the pontoon bridge, and then continue to wait for them to see themselves in the distance, take advantage of the night to cross the Daliang River on the pontoon bridge, and immediately divide the division of labor to destroy and dismantle all the five pontoon bridges after crossing the river without transitioning, and then quietly lurk on the east side of the south bank of the Daliang River.

was carefully laid out in this way, and finally let Sang Xian, the old fox, fall for it, and the whole army was destroyed.

This battle also made Xia Xue famous.

After the war, Li Shimin rewarded Xia Xue with a lot of gold and silver property, and Xia Xue gave a part of it to his elder brother Sun Wuji, cousin Gao Cheng, and Ouyang brothers and sisters, and the rest were given to Mrs. Gao, aunt, and grandmother. Everyone felt that their faces were incomparably bright, and they loved Xia Xue even more. The Ouyang brothers and sisters saw that Xia Xue never treated them as human beings, but treated them as equals as relatives, and they loved Xia Xue extremely and were loyal.

Grandma said happily: "Look at how good my granddaughter is, how capable, how filial, not only is she beautiful like a fairy, but she can also make money, and she can make a lot of money every time!" ”