《旧唐书·列传·卷七十八》
成公哭了三天。现太庙被叛军毁坏，请在郊外筑坛，皇帝朝东边哭，此后派出使者。 
今太庙既为盗毁，请筑坛于野，皇帝东向哭，然后遣使。 
Duke Cheng cried for three days. Today, the ancestral temple has been destroyed by the rebels. I request that an altar be built in the suburbs. The emperor will face east and cry, and then send an envoy.