The redemption process for Tiandi No. 1 caps is as follows:

1. Open the bottle cap.

2. Use WeChat’s QR code to scan the bottle cap.

3. On the QR code scanning page, click the "+" icon in the upper right corner, and then select "Scan".

4. Scan the QR code on the bottle cap. After completing the above steps, you can participate in the lottery or redeem.

If you need more help, you can check the relevant websites or consult Tiandi No. 1 customer service.