太庙是中国古代帝王祭祀历代祖先的地方,太祖则是一朝的受命、始封之祖,对于一朝的建立功劳最高,所以太庙大祭时要在太祖庙室中举行,太祖之主在大祭时也要居于东向最尊之位。唐代关于太祖的确立曾有过两次争议,分别在太宗朝和中宗朝。争论的焦点是:唐朝的太祖究竟应该立凉武昭王李暠还是北周唐公李虎。 Taizu is the place where ancient Chinese ancestors sacrificed the ancestors of the ancestors. Taizu was once appointed and the founder of the Taizu seal. In the great sacrifice also have to live in the east most respectable place. The establishment of Taizu in the Tang Dynasty had been twice controversial, respectively in Taizong and Zhongzong. The focus of the debate is: Should the Taizu of the Tang Dynasty Li Li, Li Zhao, a commander in chief of the Northern Zhou Dynasty and a public Lihu in the Northern Zhou Dynasty?