Fast Tian Ning
Lin Mu was possibly one of the people that was the most experienced with teleportation here. Especially when considering the fact that he could see the entire process happening in detail.
But that wasn't all. Entering the Spatial Plane through the channel, Lin Mu had to pass through the formations themselves, allowing him to observe them in further detail.
'This is better than before… I can see the flaws clearly!' Lin Mu's immortal sense was always scanning for it all.
His spatial perception was also active, letting him know when the Spatial plane was near, which wasn't long.
Unlike before, the four Spatial planes were created rather 'close' to the Rust Sky world. Even if there was the void separating the two, the closeness was still less than the previous thirty planes.