《资治通鉴·唐纪·唐纪十九》
唐高宗永淳元年春季二月，唐朝在蓝田营造万泉宫。癸未，唐朝更改年号，大赦天下。
春，二月，作万泉宫于蓝田。癸未，改元，赦天下。
In the spring of the first year (682) of the Yongchun reign of Emperor Gaozong of the Tang dynasty, Wanquan Palace was built in Lantian. On Guiwei Day, the Tang dynasty changed its regnal title and granted an amnesty to all under heaven.