Bosses

Bosses are currently in the game for rewards. They give a lot of chi and pet exp which is used for leveling up your pets. I wouldn't suggest grinding bosses for loot because they do take a long time. The first boss needs 2500 hits just to get your reward and in my opinion it is not worth the wait. But some pets do attack bosses with you. I just think that its not worth it just for about 5T (5 trillion) chi. For some people that is a lot but it is not when you are a high rank.