The usual type only absorbs a bit and converts a bit; nothing like Chen Jie, who gulps it down like a whale—one mouthful of Spiritual Energy is basically half a month of cultivation for people outside.
So there's no waiting time at all for Spiritual Energy to be converted.
And when I said just now that Du Zundao would need a few months to cultivate, there was a premise: when Du Zundao cultivates, he has to be fed a massive amount of Tai Sui Pills. If he relies only on his own Martial Arts talent to absorb the Spiritual Energy outside, he'd need a whole year.
This is the second reason Chen Jie was able to finish cultivating in just three two hours.
The third reason lies in Chen Jie himself: he cultivates both inside and out—inside he's got the Four Seasons Celestial Phenomenon Technique, and outside he's got the Seventeen Dragon Capturing Palms.
