Generally speaking, there are two ways to open the toothbrush package: there is an unbonded triangle in the lower left corner of the toothbrush package, which can be unfolded by twisting and warping, and then it is convenient for you to tear off the paper and plastic shell. The back of the toothbrush package is basically a die-cutting dotted line. Press hard with your thumb to break the tangent of the mold, and then tear it easily.