He already knows the spatial coordinates of the small world. He got the coordinates from Lady Red's mind when he was searching her mind, and she got the coordinates from a seer of the Nexus of Truth Sect.
Since he already knows where the small world is, getting it will be less stressful. It will still be stressful because the spatial coordinates don't point out exactly where the small world is, but only outline the area of space where the small world should be.
This means he will still have to search for the small world when he gets to the area. And since he doesn't have a tracking mark in the destination area, he can't just jump there directly. He will have to take a series of space jumps in the general direction of the destination until he eventually reaches the particular area.
All of these went through his mind as he jumped into the third dimension. Then he picked a general direction to tear space through.
