Talk:Autumn Valley/@comment-34301539-20181105130104/@comment-2601:18D:4701:7402:A:90F:2679:C3B5-20181105200152

The bonus chest is generally available after unlocking 500 key chest and 1000 key chest appears after reaching Rank 6. For this event, bonus chest unlocks on collecting 250 items from bonus mini games, which is not usual.

Since there are just 25 days, it would be very hard to unlock 1000 keys chest, if there is one.