Peinture murale Tombe Fouilles archéologiques Laque (arts décoratifs) Cercueil Shanxi Datong Qilicun Wei muqun M29 fajue jianbao 山西大同七里村北魏墓群M29发掘简报 = The Excavation of Tomb M29 at the Qilicun Tomb Complex of the Northern Wei Dynasty in Datong, Shanxi