This website will tell you all the answers.

In addition, ok cards are divided into point cards and membership cards. My method of use is to transfer the money in the point card to the membership card, and then use the membership card for consumption.

The membership card can be handled in the larger outlets under An Baili Group, such as Century Lianhua, which requires an ID card.

After you have done it, you can complete the authentication online, so that you can make online consumption smoothly.