```
"What? Not eating anything before going into the mountains to gather herbs? What does that mean?"
Liu Zheng was also perplexed. Moreover, he had gathered herbs himself before, but why did it seem like everything had changed completely when it came to him?
"Yes, it's a habit I've developed over many years. Therefore, before going into the mountains to gather herbs, I clean my stomach and intestines so that I can better and more directly discern the properties of these herbs."
Hearing this, Liu Zheng felt shocked. He understood that fasting and cleaning his gut meant only one thing: he would personally taste the herbs with his mouth.
If there were other substances in the stomach, it might prevent the herbs from having the intended effect.
If that were truly the case, Liu Zheng had immense respect for the old man's spirit of sacrifice.
