李元吉
In summer 626, Li Shimin, fearing that Li jiancheng would kill him, was considering acting against Li Jiancheng and Li Yuanji preemptively but was hesitating. Yuchi, in particular, was a major advocate for preemptive action, and when rumor was reported to Li Shimin that Li Yuanji was planning to first kill Yuchi, Cheng Zhijie, Qin Shubao and Duan Zhixuan (段志玄), Yuchi stated: