Su Yu had entered the grotto around 11 pm. At around 5 am, when the sun was starting to rise, he finally emerged from the grotto. He had spent all 60 drops of his blood essence. He had also discovered the true purpose of the Source Qi Secret Grotto.0

For him, the source qi inside the grotto wasn't the most important part of the grotto. More importantly, bottlenecks did not seem to exist in the grotto. One could break through smoothly in there as long as one could open enough acupoints.0

After using his blood essence and opening a new acupoint, he could directly use the next drop of blood essence without waiting. Even his willpower recovery was much faster there.0

The grotto was quite a magical place. Of course, the premise for all that was the ability to constantly break through....0