《资治通鉴·唐纪·唐纪十七》
癸丑，唐高宗下诏令：定于龙朔四年正月封泰山，并于明年二月前往东都洛阳。
癸丑，诏以四年正月有事于泰山，仍以来年二月幸东都。
On the day of Guichou, Emperor Gaozong of Tang issued an edict: it was decided that Mount Tai would be sealed in the first month of the fourth year of Longshuo, and he would go to Luoyang, the eastern capital, in February of the following year.