1. During the event, complete 1 quest to gain 1 upgrade attempt; 2. Spend upgrade attempts to gradually improv…

1. During the event, complete 1 quest to gain 1 upgrade attempt; 2. Spend upgrade attempts to gradually improve rewards. Flip the card to claim the highest current tier reward; 3. You can flip the card to claim rewards after Oct 11, 05:00. Rewards can only be claimed once. Cannot upgrade after flipping;