When Han Sen moved the underground shelter again, there was only Queen, Bao'er, and Zero left.
Old Huang and his people stayed in the Dark Shelter they had just liberated. This was by their choice, of course. Han Sen wanted to go deep into Thorn Forest; a knotted realm where none of the others would have a chance of hunting. Therefore, they decided to remain there in the new shelter.
Han Sen put Dark Prince in charge of the Dark Shelter, as he did not want to completely forfeit his new acquirement.
Han Sen still wanted to exact revenge on the super creatures that resided someplace in the depths of that underground realm, so he also commanded Dark Prince to keep an eye out for them on his behalf.
Han Sen had the shelter moved twice, so they could reach the place where the second sacred-blood scorpion was said to reside.