 He made Xiao Yu "Neishi Ling" (), the head of the legislative bureau of the government (內史省, "Neishi Sheng") and a post considered one for a chancellor, and he entrusted Xiao with some of the most important matters of state.Whenever Emperor Gaozu held imperial gatherings, he would allow Xiao to sit next to him, and particularly, because Xiao had married a member of the Dugu clan, from which Emperor Gaozu's mother Lady Dugu also came, Emperor Gaozu referred to him endearingly as "Master Xiao.