$challenge_level_1_reward
Challenge level 1 reward
挑戰等級 1 獎勵
$challenge_level_2_reward
Challenge level 2 reward
挑戰等級 2 獎勵
$challenge_level_3_reward
Challenge level 3 reward
挑戰等級 3 獎勵
$challenge_level_4_reward
Challenge level 4 reward
挑戰等級 4 獎勵