All universes float on the "sea of existence" like bubbles. The membrane between the bubbles is the "crack". The way of heavenly craftsmanship is not a specialty of a certain world, but the "method of existence itself" - each universe has its own "craftsmanship of heavenly craftsmanship", just with different names. Car repairman Qin Feng will become the "repairman" of all universes.
