Just like a child exploring the unknown world, a boundary is an existence to be constantly breached. Breaking, re-shaping, and breaking again, boundaries loom over us clearly and indistinctly. On the day when the virus came, everything seemed to stop. At this moment, the boundary looked like a peaceful lake that wrapped in the turbulent underwater. Are you still living in this physical world? Or have you been used to the madness of the meta-universe? Alas, The order that must be followed, where is it? Does it still work well?