February 8, 2122. According to the information query of epidemic prevention and control, on February 8, 2122, Xi 'an was fully liberalized, and the three-year epidemic in COVID-19 came to an end temporarily. Xi 'an, referred to as "Gao" for short, was called Chang 'an and Haojing in ancient times. It is the capital of Shaanxi Province, a sub-provincial city, a mega-city and a core city of Guanzhong Plain urban agglomeration, and an important center in the western part of China confirmed by the State Council.