Iron juice concentration camp, iron juice club, etc.
According to the relevant information on Naming69.com: The following are some group names that describe the relationship: Tiezhi concentration camp, Tiezhi club, Tiezhi group, Tiezhi alliance, Tiezhi gang, Tiezhi team, Tiezhi team Iron Heroes, Iron Family, Iron Dynasty, Iron World, Iron Empire, Iron Flying, Iron King, Iron Friendship, and Iron Brothers.
Guanxi is a word that describes a close and strong relationship. It is usually used to describe a very close, reliable and firm relationship between two people.