Guild feature will be unlocked after Main Quests Stage 3-8 of Normal Difficulty is cleared.
You can tap the Guild button on the main interface to enter the Guild interface.
If you haven’t joined a Guild yet, you can view the information of the Guilds that are available to join, including the Guild names, the number of members, and the requirements of joining, etc.
You can also choose to create your own Guild (200 Diamonds required), or tap the Quick Join button and let the system choose a Guild for you.