Before the outbreak of the Sino-Vietnamese War, Vietnam and China were brothers and comrades. Everyone is fighting for a better future for their country, and it can be said that the two countries support each other, but more than that, China is supporting Vietnam, because China has supported it economically and militarily for nearly two decades. However, this relationship changed after the Soviet Union joined, and in 1965 the Soviet Union began to support Vietnam, and the international situation at that time was that the Soviet Union and the United States became the two world hegemons. Vietnam immediately threw itself into the feet of the Soviet Union and became one of the many satellite countries around Vietnam.
This also hinted at the subsequent change in the situation between the countries, because the Soviet Union wanted to defeat the United States and put political pressure on the United States, so it launched the Indochina Plan. All the countries on this front were united, among which Vietnam planned for Indochina, even at the expense of diplomatic relations with China for thousands of years since the beginning of the Qin Dynasty. At the instigation of the Soviet Union, he began to breed incidents on China's borders. But in fact, we can't kill a bunch of people with one shot, this is just the plan of the Le Son gang, the previous Vietnamese leader before The Lei Duh was named Ho Chi Minh, he was pro-Centrist, and there was a general named Wu Yuanjia in his faction. Presumably, everyone has heard that this is the supreme commander of Vietnam in the later self-defense counterattack against Vietnam.
But obeying orders is the duty of a soldier, and Wu Yuanjia can only accept orders, although he is pro-Chinese. It is precisely because he is pro-China, and in the early stage of combat deployment, he did not have a too strong attack method, but always fought in the form of defense. However, on February 17, 1979, China's 200,000 troops, a high-density rain of guns and bullets attacked the Border of the Vietnamese Army, Wu Yuanjia really did not think that he believed that China would not really fight Vietnam, which was also based on the friendship between the two countries. But when he knew that China was real, he already knew the end of Vietnam, but as the supreme commander he could not disturb the hearts and minds of the army. However, it was precisely because of his defeat in the first battle that Li Sun angrily dismissed him and replaced him with another person, this person was named Wen Jinyong.
The outcome of the war was as Wu Yuanjia expected, except for pro-China figures such as Wu Yuanjia, most of the Vietnamese people hated China for a while. And Wu Yuanjia knew that China was forced to be helpless, but this could not change the facts. After the end of the war, our country captured thousands of Vietnamese troops. These thousands of Vietnamese prisoners were treated like guests in our country, sometimes even better than the Chinese soldiers. A few months later, China and Vietnam exchanged prisoners at Friendship Pass. The Vietnamese captives in China all ate well and dressed well, not only with new clothes, but also with bread and apples in their pockets. On the other hand, the fighters captured by Vietnam in our country are either numb or emotional. Most of them were disheveled and dressed in rags. Later, the supreme commander of the Vietnamese army, Wu Yuanjia, wrote a letter of thanks to China for its preferential treatment of vietnamese prisoners. Comrade Deng Xiaoping was very pleased, and from this incident we can highlight the difference between a small country and a big country.