In 1921 he invaded Guangxi, igniting the Second Ao-Gui War. Lu sent two wings of his army, one led by Tan Haoming and the other under Shen Hongying, into Guangdong where they drove back the Cantonese and occupied Qinzhou and Lianzhou.
In 1921, Lu launched an invasion of Guangxi, leading to the Second Ao-Gui War. He deployed two military wings, one led by Tan Haoming and the other under Shen Hongying, into Guangdong, where they successfully repelled the Cantonese and captured Qinzhou and Lianzhou.