During the anti-encirclement and suppression battle, Xi Zhongxun was injured and was rescued by fellow countryman Li Laoshuan.Du Heng visited the seriously injured Xi Zhongxun and insisted on leading the troops south to the Weihua area. Xi Zhongxun firmly opposed it, disappointing Du Heng.At the meeting of the 26th Red Army, Du Heng arbitrarily passed the decision to send troops south.Du Heng led the 26th Red Army southward and was heavily surrounded by the enemy.Du Heng was timid and fled, so Liu Zhidan had no choice but to lead his team into the Qinling Mountains to preserve his strength.