Duke Zhuang of Lu (Chinese: 魯莊公; pinyin: Lǔ Zhuāng Gōng; 7 October 706 BC – 11 August 662 BC), personal name Ji Tong (姬同), was a duke of the Lu state during the Spring and Autumn period of Chinese history.
Duke Huan named his newborn son, who shared his birthday, Tong (Chinese: 同), meaning "the same."
Prince Jiu was forced to return to Lu with Guan Zhong and Shao Hu (Chinese: 召忽), his tutors.
We ask you to hand them over, and we will be satisfied.”[1][a]Prince Jiu was killed, while Shao Hu committed suicide.
Guan Zhong asked to become prisoner himself, but after Bao Shuya brought him back to Qi, he released him.
In 684 BC, Qi attacked Lu once again, but Qi was defeated by Duke Zhuang at Changshao, at which he personally lead the Lu army, with the aid of Cao Gui (Chinese: 曹劌), an official of common birth.
Though Duke Huan desired to renege on this agreement, Guan Zhong ultimately persuaded him against it.