After the end of the 1950s, due to the Soviet Union's pursuit of great power chauvinism, Sino-Soviet relations began to turn against each other, and Vietnam took the opportunity to continue to create incidents on China's southern border. By 1978, the situation was even worse. The friction and conflict between the two sides have become more and more acute, and the Vietnamese side has constantly created incidents in the border areas, and has also seized islands and reefs in the South China Sea and invaded Cambodia, which has seriously endangered the integrity of China's sovereignty.
Under these circumstances, the Central Military Commission, under the discussion of Deng Xiaoping and others, decided to punish Vietnam well. The counterattack against Vietnam was mainly divided into two sides, the eastern front and the western front, the eastern front entering Vietnam in Guangxi, and the western front entering Vietnam in Yunnan. The commander of the Middle East Front is Xu Shiyou, who is a fierce tiger who frightens the enemy, fights quickly and accurately, has a very military mind, is a fierce general in the army, and is deeply loved by Chairman Mao.
After the war began, he also lived up to his trust, although the People's Liberation Army was facing the ace troops of the Vietnamese Army, But Xu Shiyou did not panic, but personally ordered that he would completely annihilate the enemy and leave no one behind. This greatly boosted the morale of the whole army, and it took a number of urban areas with a single blow, and the Vietnamese army, which was usually high-spirited, also had a day of being frightened.
Faced with the ferocious penetration of the Chinese army, the Vietnamese defenders soon collapsed. On the morning of March 1, the 55th Army concentrated more than 300 artillery pieces to violently bombard Langshan, dropping tens of thousands of rounds in 30 minutes, and Langshan City was blown into a sea of fire. Its artillery units actually engaged in a confrontation with the Chinese artillery, and the Battle of Lang Son became the fiercest battle in the self-defense counterattack against Vietnam.
The troops continued to approach, the Vietnamese capital Hanoi seemed to be close at hand, the Vietnamese government finally scrambled, did not dare to face the team led by Hsu Shih-yầng, but quietly established fortifications, ready to retreat and transfer when the war was unfavorable. At that time, in order to ensure the safety of the rear, the central government decided to return to the country at the end of the point, so it issued an order to withdraw its troops.
After receiving the order from the central authorities, Xu Shiyou expressed his obedience to the central arrangements, but Xu Shiyou was still a little unfinished, and it was really disgusting that Vietnam's treachery was really hateful, so he said that he would fight a little further to scare and frighten the Vietnamese government.
Therefore, at that time, Xu Shiyou issued an order to "arch one arch" and ordered our army to drive forward for tens of kilometers. After our army carried out this order of Xu Shiyou, the army marched several tens of kilometers in the direction of Hanoi in an invincible direction, and after the news reached Hanoi, the Vietnamese government hurriedly packed up its things and fled.