1943 why was Li Zongren transferred from the fifth war zone in September?

The purpose is to move Li Zongren out of the powerful fifth war zone. Chiang Kai-shek was suspicious and jealous of talents. He saw that Li Zongren had a harmonious relationship with the troops in the Fifth Theater and was deeply supported by his subordinates, fearing that he would form a game that was too big to fail. However, in the six years of the Anti-Japanese War, Li Zongren's Fifth Theater achieved brilliant results, and Mr. Jiang had no proper excuse to transfer Li Zongren. Therefore, his only choice is to set up a respected new institution with no real power, so that Li Zongren can rise and fall, divorced from the actual relationship with the army. Chiang Kai-shek's intention is of course Li Zongren's insight, but it is also in line with Japan. Because in the past six years, Li also wants to have a rest; It is better to lighten some responsibilities temporarily, do something for Gao Zhen, and avoid it for no reason. So after the announcement, Li relaxed and was ready to surrender soon. Hanzhong camp is a newly established military organization between the central government and various war zones. On the surface, the authorities are in charge of commanding the first and fifth war zones. Later, the central government designated the Dabie Mountain guerrilla base area as the tenth war zone, so Hanzhong camp was directly under the jurisdiction of three war zones. Hanzhong camp is actually a pseudo-organization without actual power. The operations in various war zones have always been under the direct command of the Central Military Commission. After the establishment of Hanzhong camp, this command system has not changed, except that all war zones also copied their reports to the central government. So it seems that this institution was set up by Mr. Jiang for Li Zongren alone.