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In these three days, Ye Feng had already opened up more than fifty apertures on the first day. The pure origin energy allowed him to open apertures extremely quickly; however, his progress clearly slowed down on the second day when he only managed to break through more than thirty, and by the third day, he had only broken through twenty acupoints.
Ye Feng was well aware that the further he went, the more origin energy was needed for each subsequent acupoint. Each new acupoint required twice the energy of the previous one, increasing progressively. Even though his absorption rate wasn't slow, the speed of opening apertures had also become slower and slower.