Natural brush strange cage, as long as the mode is not in the' peaceful' state, then the corresponding creatures will be generated around the brush strange cage from time to time (see what creatures are in the brush strange cage). The brush strange cage cannot be collected with a pick accurately collected by the boundary, but the piston can push it. The brush cage of the modifier is the same. Moreover, in multiplayer games, if the owner or the administrator (OP) sets the map not to generate monsters, the natural brush strange cage will also brush monsters, and the brush strange cage in the modifier will be affected and no creatures will be generated.