[3] Lei Yanwei apparently occupied Jiangling for some time, but Lei Yangong rose against him and, in coordination with Zhao Kuangning the military governor of Zhongyi Circuit (忠義, headquartered in modern Xiangyang, Hubei), expelled him from Jiangling and, apparently, from Wuzhen Circuit as well.
In 906, because He Gui was unable to stem the repeated pillages that Lei was carrying out, Zhu replaced him with Gao Jichang, who proceeded to build up Jiangling's defenses against future raids.
[4] In 907 — by which time Zhu had taken over the Tang imperial throne and established a new Later Liang as its Emperor Taizu — Lei allied with Ma Yin the Prince of Chu to again attack Jiangling.
Gao stationed an army at Gong'an (公安, in modern Jingzhou) to cut off the Wuzhen forces' supply route, and then defeated them.
Apparently turning against his ally, Lei then attacked Chu's Yue Prefecture (岳州, in modern Yueyang, Hunan), but was unable to capture it.