 They confirmed Li Chengqian's guilt, and Li Chengqian was subsequently deposed, although Emperor Taizong, believing that Li Tai's machinations were responsible for Li Chengqian's downfall, exiled Li Tai as well and created another son, Li Zhi, crown prince.He subsequently made Zhangsun, Fang, and Xiao Li Zhi's senior advisors.Later that year, Emperor Taizong requested to read the official history that Fang had written about during his reign, and Fang initially resisted, stating that it would set a bad precedent (as previously, it was considered inappropriate for emperors to read histories of their own reign, lest that historians be hindered from recording incidents accurately).