Li Sizhao
Later in 901, the powerful eunuchs at the Tang imperial court at Chang'an, believing that then-reigning Emperor Zhaozong of Tang and the chancellor Cui Yin were able to slaughter them, forcibly seized Emperor Zhaozong and took him to Fengxiang Circuit (鳳翔, headquartered in modern Baoji, Shaanxi), then reigned by the eunuchs' ally Li Maozhen. Cui, who was allied with Zhu, summoned Zhu to attack Fengxiang. Li Maozhen wrote Li Keyong to request aid. Li Keyong sent Li Sizhao to attack Jin Prefecture (晉州, in modern Linfen), and Li Sizhao defeated Xuanwu forces at Jin Prefecture. Subsequent battles in spring 902 in which Li Sizhao and Zhou engaged Shi and Zhu's nephew Zhu Youning (), however, could not produce conclusive Hedong victories, and Shi was eventually able to defeat Li Sizhao and Zhou at Pu County (蒲縣, in modern Linfen). They tried to withdraw, but the Xuanwu forces chased them. In the subsequent engagement, Li Keyong's son Li Tingluan () was captured by Xuanwu forces, who then again advanced to Taiyuan and put it under siege. The situation became so dire that Li Keyong, under the advice of his adoptive son Li Cunxin, considered abandoning Taiyuan and fleeing to the north; only at the urging of his wife Lady Liu, as well as Li Sizhao, Li Siyuan, and Zhou, did Li Keyong resolve to defend the city. Li Sizhao and Li Siyuan again led nightly counterattacks against the sieging Xuanwu forces, and eventually, the Xuanwu forces withdrew. Even though Hedong forces were in fact then able to further recapture Ci, Xi, and Fen (汾州, in modern Linfen), it was said that Li Keyong did not dare to again engage Zhu for several years. (Li Maozhen was subsequently forced to sue for peace by surrendering the emperor to Zhu.)