If he procures some related cultivation medicine, the stacking buffs would be astonishing.
Apart from the cultivation bonuses, he himself is quite suitable to cultivate the "All Space-Time Eternal Freedom Profound Chapter", for this legendary cultivation technique focuses on the laws of space-time, which he has ample conditions to access without needing to find another way.
The greatest aid among them is the legendary item he possesses: the Master of the Universe Badge.
This item has no effect within the dungeon, but in the Otherworld it can be frequently used, allowing for control over the laws of time and space, which is extremely suitable for him to comprehend the great path of space-time.
Then there are his Epic Layer weapons, the Blade of Time and the Belt of Blank Entwining, which respectively have skills related to time and space and provide considerable help.
