Chen Mo made a discovery—a revelation from Yan Peipei that the yin-yang harmony she mentioned was correct. Every time after he engaged in the act, there was a noticeable relief, and his condition seemed to be getting better and better. That's why Guan Xi Yun said he was getting stronger.
But, using one's mouth doesn't count.
The two encounters with Guan Xi Yun just now made the difference quite palpable.
Even with a woman like Guan Xi Yun, using his mouth brought no sense of relief.
In other words, the secret technique didn't support oral methods, which contradicted the thoughts of ancient people.
Guan Xi Yun asked him to wait outside the school, and she went to take a shower before coming out. Unfortunately, the clothes she changed into were just as plain, resembling an ordinary female teacher. She seemed to dislike other types of clothing.
The car she drove was unremarkable as well, just an old-model BMW.
