Lin Fan escorted them to the entrance of the Valley of Mist.
This was where he had bumped into the former leader of the Mist Guards in the beginning, the place where he had entered the Valley of Mist.
Once they were out of the Valley of Mist, Lin Fan also released his Mist Shaping Technique.
He didn't completely release it so that he wasn't protected against the mist, but he did stop using his Mist Shaping Technique to protect the members of the Mist Guards.
However, that wasn't a problem since they were all trained in the Mist Shaping Technique as well. The moment that he released his Mist Shaping Technique, they just released their own Mist Shaping Technique and created spaces around themselves.
It seemed like there wasn't a problem with their cultivation at all.
It really was as if time had frozen for them during the years that they had wandered around in the mist.