Negotiations on the peaceful uprising in Yulin were suddenly stopped by the Zuo Xie Zhong. With the push of Xi Zhongxun and the Northwest Bureau, the Zuo Xie Zhong agreed to restart the negotiations.At the same time, the Northwest Bureau established a preparation committee to take over Xi'an, and the liberation of Xi'an was put on the agenda.Ichigo was discussing the opportunity to liberate Xi'an. Xi'an secret front sent information that Hu Zongnan had withdrawn from Xi'an and retreated to Hanzhong.Zhang Zongxun, Xi Zhongxun and others decided to liberate Xi'an in advance.Xi Zhongxun, Zhang Zongxun and others instructed the troops to protect important facilities and urban construction in Xi'an to prevent them from being destroyed by Kuomintang agents.On May 20, 1949, Xi'an was liberated.Facing the Kuomintang troops who may counterattack at any time and the enemy agents who are destroying everything in the city, Yiye is also waiting for reinforcements from the 18th and 19th Corps.