When can qq's secret adventure be opened for free?

Qq Hyun Dance Secret Adventure Issue 20.

Elite monster activity

Activity time: August 13, 18-2 1.

After the start of this activity, the chances of players encountering all the wheels of destiny and turning all the wheels of destiny to special monsters will increase.

Which one is your favorite, please remember the specific time of the activity!

Free treasure chest activity

Activity time: August 20th 18-2 1.

After this activity starts, players can get a treasure chest reward for free.

Double customs clearance reward activities

Activity time: August 27th 18-2 1.

After the activity begins, the player's customs clearance reward on each floor will be doubled. This activity can be enjoyed not only by players who explore each layer of secret territory in sequence, but also by players who use teleportation crystals.