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Setting aside the speed of time, the biggest flaw of the "foolish method" was nothing more than the drain on the Curse Forbidden Master. But after mastering a superpower, Cen Dongsheng's physique and True Qi had been enhanced to a critical point by the Power of Tiger Demon—
As long as he didn't encounter those ghosts that required some effort to deal with, the remaining minor enemies didn't even count as a drain.
The refined yin energy was enough to compensate for the True Qi loss, and his strong body allowed him to maintain a no-sleep, round-the-clock combat state for over 24 hours. Compared to a living person, Cen Dongsheng at full throttle resembled a Terminator robot more.
Since he had such power, Cen Dongsheng naturally wouldn't hold back. He maintained a brisk walking posture, killing from the third floor of the laboratory to the second, then the first floor, through the corridor to the opposite teaching building, and all the way up again.
