Many people have a certain misunderstanding of the Kuomintang, believing that the defeat of the Kuomintang was due to the incompetence of their military generals, but this is not the case. If we only look at it from the perspective of fighting the Japanese army, these generals belong to the ranks of patriotic generals, and their military exploits should also be remembered. One of the biggest reasons why the Kuomintang was defeated by the PLA when it had a large number of famous generals, advanced enough equipment, and sufficient materials was that the Kuomintang was not united within itself. 
More strictly speaking, there are various factions within the Kuomintang, and they disregard the overall situation for their own interests, which leads to many problems in cooperation in the war, which also gives the PLA an opportunity to take advantage of. Just like between Du Yuming and Sun Liren, both of them are famous anti-Japanese generals, but the relationship between the two is quite tense, and even when Du Yuming mentioned Sun Liren in his later years, he would scold the other party for being a shameless villain. What kind of incident happened between these two people that caused such deep hostility to be unable to let go of it in their old age. After the outbreak of the "Lugou Bridge Incident", China was ruthlessly invaded by the Japanese army, and it was obvious that the Japanese army had made sufficient preparations to attack China, so after entering China, it quickly cut off China's few international transportation lines. In this way, the anti-fascist alliance will not be able to provide any assistance to China, and it has to be said that Japan's intentions are also quite vicious. Of course, China will not sit idly by, and immediately dispatched 200,000 Chinese laborers to Myanmar to establish new international communication routes in order to obtain supplies. 
The Japanese invasion finally aroused public outrage, so Japan was severely damaged in the First World War in the Pacific, and a large number of troops were urgently needed to support it. Therefore, the Japanese army began to lock on Burma, wanting to destroy the Yunnan-Burma road and make China's supplies unable to be supported again, so that the war in the Chinese battlefield could be quickly ended and the troops could be invested in the Pacific War. Chiang Kai-shek naturally knew the importance of this matter, and then reached a consensus with Britain to sign a mutual defense agreement, and sent 100,000 troops to Burma. In the face of the British army's request for help, Sun Liren and Du Yuming were preparing for a large-scale battle, and naturally they were not afraid to take care of this matter, so they sent Liu Fangwu to lead troops to reinforcements. Liu Fangwu didn't dare to make a decision in this regard, so he asked Sun Liren, and after Sun Liren learned of this, he immediately said that he could not respond, and such a direct assault was undoubtedly sending him to death. 
Therefore, Liu Fangwu was asked to attack again at dawn, at this time the Japanese army's defense was the most lax, and after the subsequent victory in this battle, it was widely publicized by the outside world, and there were many British and American journalists among the people who were rescued. Therefore, these reporters beautified Sun Liren in various ways, and for a time made Sun Liren a famous anti-Japanese general, without mentioning Du Yuming and others, although Du Yuming was dissatisfied, he didn't care too much. But then Sun Liren's actions completely angered Du Yuming. The British were frightened in this battle, so they chose to retreat to India, but Sun Liren was willing to become a barrier for the British at this time, leading the team to be stationed between Burma and India. You must know that the garrison is a very special place, not only the environment is not suitable for survival, but there is no way to replenish supplies, especially the environment of Savage Mountain, which has caused many soldiers to die here. 
Even the soldiers who left by luck died one after another because of stomach ulcers, kidney tuberculosis, lung disease and other diseases in this place, so Du Yuming was extremely disgusted with Sun Liren, and it was precisely because he was willing to serve as a shield for Britain that his team suffered such a big loss. This kind of person who doesn't care about his own ** brother and wants to please the British, how can he not be regarded as a shameless villain.