Not including the life he had in the previous timeline, there are only two instances, including this time, that Su Xiaotian is travelling through a spatial corridor that obscures his senses from anything else around him outside of the pathway he is travelling on.
The first is during his first true experience outside, during his encounters with the Crescent Moon Secret Realm, where he starts comprehending the mysteries and profundities of the spatial rules, which is also the reason why he has the Infinite Dimension System now.
As for the second one, the one he is experiencing right now, the spatial tunnel doesn't baffle him as much as his first experience, and yet despite that, he still couldn't help but marvel at the complexity of the spatial rule, the complexity of the Dao of Space, so much that the thought of staying here just to study how it works even pops within his curious mind.
