7: 30 to 2 1. Zigong is a prefecture-level city in Sichuan Province, located in the south of Sichuan Basin, bordering Longchang and Lu Xian in the east and Luzhou and Yibin in the south. The time schedule of this area shows that nucleic acid can be obtained at 7:30-2 1 in Zigong Huashang Square. Zigong is a city made of salt. Zigong is called Zigong by the names of Ziliujing and Gongjing.