Join an Alliance and complete Alliance Quests to acquire things like resources, equipment materials, and Hero XP items. Tap Start from the Alliance Quests in the Quest menu to start Alliance Quests. Any Alliance Quests that aren't completed are periodically changed to other quests (any Quests in progress or completed Quests where the reward hasn't been collected won't be refreshed). The time required to clear an Alliance Quest depends on the available rewards.
Tip: Upgrade the Inn to get more Alliance Quests. Having VIP Level 11 or higher activated allows you to automatically complete Alliance Quests