1. Once you've bound a third-party account, you can send friend invites. Your invited friend must use your invite to enter the game before it is recognized as a successful invite.
2. If your invited friends purchase Gems, you'll receive a Gem reward equal to 5% of the purchase total.
3. When your total of successfully invited friends reaches 1, 3, 7, and 12, you'll earn additional system rewards.
4. When each of your invited friends reaches Castle Level 5, 10, 15, and 19 you'll also earn corresponding rewards.
5. Tap "Invite" on the Event Hall to check your invitation status and records.
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