According to the little red book APP query, the use steps are as follows:
1. Open the Little Red Book APP and click "My" in the upper right corner of the homepage.
2. After entering the personal page, click "red envelope".
3. Select the red envelope to use on the red envelope page, and click "Use Now".
4. Enter the payment page, select the payment method, enter the payment password, and complete the use.
If you get a red envelope from someone else, please use it within the validity period, and you can't use it after it expires.