Unlock Condition：different instances will open when character arrives level 30, 50, 70,80
Instance：Along with the increase of instance level, the enemies in instance will increase. The arrangement of enemies of instance is three waves enemies and one BOSS.
Experience, universal coin, training point, material (by chance) for each wave of enemies.
Choose one chest from three after clearance.
Experience, universal coin and material in clearance chest.
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