Whiteout Survival

New Content
1. New heroes: Gen 9 heroes.

Optimization & Adjustment
1. Formation: Added 2 formation slots which can be unlocked at Furnace Levels 26 and 30 respectively.
2. Pet Skills: Reduced the cooldown of Pet Skills from 24 hours to 20 hours for Titan Roc, Snow Leopard, Cave Lion, Snow Ape, Iron Rhino and Saber-tooth Tiger.
3. Exploration Battle: Adjusted the recommended Power to make it better aligned to the difficulty.