I can't. The credit grade point of compulsory courses is the average grade point of each subject after conversion. If it fails, it can only be retaken and cannot be replaced. 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.