Huazhuo Education, the ID card has been used, and it has been used by others. By reviewing whether the ID number is correct. Hua Zhuo Education wrote that the ID card was used because the ID number was used by others, or there was an error in the system, and the ID number was marked as used. To make sure that the ID number has not been used by others, you can try the following methods to solve it: recheck whether the ID number is correct, ensure that it is entered correctly, try to register or apply with other browsers or devices, and if the problem still cannot be solved, you can contact the customer service staff of relevant departments or companies for help.