As such, when Gao heard that Yong Lin had killed Wuzhi, he secretly invited Xiaobai to return to Qi from his exile in the state of Ju (莒).

Moreover, the Lu side dispatched Jiu's preceptor, Guan Zhong, to lead troops to intercept Xiaobai along the road from Ju to Qi.

[3][4] This turn of events infuriated Duke Zhuang, who then personally led a new campaign against Qi in the late summer to install Jiu to the throne.

[7] Soon after, the high minister Bao Shuya led the victorious Qi army into Lu territory and wrote to Duke Zhuang as follows: Gongzi Jiu is our kinsman.

Bao Shuya then returned to the capital and reported to the Duke: Guan Zhong’s talent for governing surpasses that of Gao Xi.