 Meanwhile, an incident occurred where Xiao and Chen Shuda argued before Emperor Taizong, and both were removed from their posts.In summer 627, however, after Feng's death, Emperor Taizong again made Xiao "Shangshu Pushe".Later that year, Emperor Taizong discussed attacking Eastern Tujue, which Xiao favored, but Zhangsun Wuji opposed, and therefore Emperor Taizong did not carry out the attack.