Unbind the main card according to the following steps:
1. Open Alipay and click the health code.
2. Click on your electronic health card.
3. After sliding the page down, click Unbind this card.
Xuzhou Health Treasure Children's Master Card can be untied and modified. Click on Xuzhou Health Treasure APP on WeChat to unbind Master Health Treasure on Xuzhou Health Treasure Management page.