@Book because there is only 1 "guide" per planet, and the blue planet is the lowest in rank so they don't care much about it, even it everyone perished, while now they are interested in the mc, but only 1 guide knows of him and he just left the planet and is too far away, will prolly take him a while to get to the blue planet and will probably get there when lu sheng already killed the pirate and his crew OR he will not even get there because lu sheng would ask him to take him to the new planet and leave the blue star, since the "dangers" he foresaw were the space pirates and once they are gone, blue planet is safe and he can leave without much thought about it.
We've all had bad days. But we learn. And we stick together.