10 working days. By inquiring about the management measures of Lianhu District Education Bureau in Xi City, it is known that the examination and approval of the rest of the Education Bureau takes 10 working days. Xi 'an, referred to as "Gao", was called Chang 'an and Haojing in ancient times. It is the capital of Shaanxi Province, a sub-provincial city, a megacity, the core city of Guanzhong Plain urban agglomeration, and an important central city in western China determined by the State Council.