To unlock the Red Army attribute, upgrade Li Wenzheng to reach LVL 50. and you must have 5,000 Sunglasses to unlock Li Wenzheng's ultimate skill (Excitement). Activating the Excitement will increase the attack, defense, and Hp for all troops for a period of time. When you send your troops, a red halo will surround them.
How to unlock the "red army" attribute?
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