Following this battle, the Liao army would "retreat immediately whenever they saw Ye's flag", according to "History of Song". Within two years of his surrender, Yang was promoted to the nominal post of surveillance commissioner (觀察使) of Yunzhou (雲州, modern Datong, Shanxi, then still under Liao control), while retaining his appointments in Daizhou and the Sanjiao military base. Several Song border generals became jealous. Some sent letters to Emperor Taizong listing Yang's shortcomings. Emperor Taizong allegedly forwarded the letters to Yang to show his trust.