The entire time world of "Ring Messenger" is actually not a circle. In fact, every time you cross, it is shifted to another parallel world, so it is impossible to form a circle. The ending of suicide is to change the problems in a parallel world. The world of one is already done; since people are dead, they cannot travel to another world. Therefore, the ring in "Ring Messenger" is a false ring, a ring on the surface.
I secretly thought that if Old Qiao hadn't killed Xiao Qiao when he was young, it would have been connected into a complete ring, but this is the idea of fatalism.
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