For instance, one second he was in this room, and the next second he was in another building.
This would definitely bamboozle all those evil spirits.
To outsiders, he seemed to possess a near-teleportation-like ability.
If room 225 was considered his home, then he had essentially moved his household.
This technique was very useful even just thinking about it, the only consideration was...
How much lifespan would it consume to alter the passage of time in the mirror world?
If it only consumed years and minutes of his lifespan, he could use it as a standing means.
If it was measured in years, Yu Liang could only sacrifice his "high-speed movement" and use this tactic for sudden appearances and disappearances.
Of course, driving or cycling to a specific location within the mirror world might also count as "high-speed movement". In the absence of transport, he could use Li Huazhao instead.