1 如果你第一个目标是怪物 比如蜘蛛影怪他会自己找周围的怪物连着打。
2 如果你第一个目标的是中立生物会自动找周围同样的生物打不会打别的。
3 无论如何都不会自动打跟随你的生物或者友善的生物，除非你先手打他们。

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1.If your first target is a monster, boomerang will find the monsters around it and attack them one by one.
2.If your first goal is a neutral creature，boomerang will find the same one around it and attack them one by one.
3.Boomerang never actively attack friendly, neutral creatures or followers.