一个正方体内部全是镜子，史勿心同学站在一个角上，用一束激光照向某个方向，问他是否能够通过反射成功闪瞎自己的狗眼？

A 3D cube we stand at one corner, all the faces are mirrors and we have a bean light, can we point at some direction and blind ourself (that means, the light bean hit the corner exactly where we standed after several reflections).