To create a group for Taobao Tiantian Jielong, you first need to open the Taobao mobile client, click "My Taobao", then click "Message Center", select the "Jielong" tab, click "Create a new Jielong", enter the Jielong name, Jielong rules and other information, select the products to be Jielong, set the Jielong time and quantity, and finally click "Create Jielong" to successfully create a Jielong group. In the Jielong group, you can invite friends to participate in the Jielong and enjoy preferential prices and fun.