Jiangnan
General Li Xiucheng of the rebel forces encircled the region of Jiangnan, taking over Hangzhou in the process, leading to its mayor committing suicide.
Li's daring act attracted the attention of Zhang Guoliang who ordered General Tidu Zhang Youliang(張玉良), in command of 36,000 troops, to track Li's corps. Li routed Zhang's troops and crippled the Army Group Jiangnan. When Zhang Youliang arrived in Hangzhou he believed that Li was occupying the city but Li's corps had left two days earlier on March 19th and attacked another city while waiting for reinforcements.
In Nanjing Hong Rengan ordered Chen Yucheng's troops to cross the river. Chen commanded over 100,000 forces along the river and on 29 April he received the signal to attack from Hong Rengan and began the crossing.
Read more about this topic: Second Rout Of The Jiangnan Daying