There is my silver treasure chest in the personal message center! You can open the treasure chest by voting for a monthly ticket. It seems that each person can open it five times?
I just tried it, and it was so weird. I have a leader with a fan value of 6666666, which is when the treasure chest is opened.
If you are interested, you can try it. You have to submit it in the treasure box interface of the message center to open the box. The message center is the mailbox icon.