The better the cultivation technique, the more types of qi it can absorb at the same time.
Given the total amount of air remains constant, the more types of gases a device can absorb from the air, the higher the absorption efficiency and the more gases it can absorb during the same period.
The Chaos Art that Dong Tianyu practiced was like a high-powered vacuum cleaner that indiscriminately absorbed any and all forms of energy, and naturally, the cultivation efficiency was extremely high.
The reason his cultivation speed was initially gentle was not due to a problem with the cultivation technique; it was because Dong Tianyu wasn't dedicating enough effort to his practice.
Unlike other cultivation systems, the path of cultivation has no limit on daily cultivation time. As long as the cultivator is willing, and the body can endure it, it is very common to have immersive cultivation sessions that last a month or even several years.
