After a long period of training, Tianlang-Jun was allowed to be released. After his release, he decided to travel around the world with Zhuzhilang. During this period, they met Xie Lian and Hua Cheng, who were picking up rags, and Wei Wuxian and Lan Wangji who were friends with each other... Etc.
(The characters in Mo Xiang's works all have this to a greater or lesser extent)
Purpose: Travel around and make friends