How to solve this problem by hack ?

How to bypass this by hack ?
MAT CIBMALL only give 10 times per day for rare earth battle ...but i want it more , how to bypass that ?

Rare earth battle nid the key , but how do u get the key ?

go to item mall and search for reward key. it will come out one result, buy the reward key for 10k silver and can go in to the rare earth battle for five times