This is an event where you turn over the card and receive a reward.
A ticket is required to flip the card, and 10 free tickets are provided as standard.
There are 4x4 cards (total of 16 cards) in one set, and if you turn the cards over and turn over the highest grade card, you can move on to the next set.
When all free tickets are used up, you can purchase 20 tickets by paying 68RMB (limited to one time), after which each ticket will be exchanged for 60 quartz.
There are a total of 6 sets in the game, and the Hubble skin appears in 6 sets.
The worst case scenario is if you flip over all 96 cards in 6 sets and flip the last 96th card to get the Hubble skin.
In this case, the cost is as follows: (Free 10 times + 68RMB + 3960 Quartz) or (Free 10 times + 5160 Quartz)