Xue Song

Xue Song () (died 773), formally the Prince of Pingyang (), was a general of the Chinese rebel state Yan, who later submitted to and became a general of the Tang dynasty, from which Yan had rebelled. As was in the case of several other Yan generals who submitted to Tang but who had substantial army and territorial holdings, Xue was allowed to retain his command and territory, semi-independent of the Tang imperial government structure. Provided by Wikipedia