Huaguang Building is an ancient building located in the ancient city of Langzhong City, Sichuan Province. It is a key cultural relics protection unit at the provincial level. The building spans the south end of Dadong Street and is situated between Shanghua Street and Xiahua Street. It covers an area of 8 mu and has a building area of 150 mu. Founded in the Tang Dynasty, Qingdaoguang was destroyed by fire and rebuilt in Tongzhi. Among the existing pavilions in Langzhong, Huaguang Building is the earliest and most magnificent one, so it is called "the first floor of Langyuan". The Pavilion at night, accompanied by the lights, has a unique view, which seems comfortable.