C386 Keep a Low Profile

Feng Zimo heard what Yin Huayuan said and smiled. He had thought of this a long time ago, but he had been waiting for Yin Huayuan to take the initiative to speak!

"It's not impossible to teach you. But how can you guarantee that it won't be taught to outsiders?" Feng Zimo asked.

"I, Yin Huayuan, swear on my soul that if I casually spread the Soul Skill to the outside world