C2152 Grade Nine Yin Yang Heaven Replenishing Pill

"Looks like you have to start developing a pill that can allow me to unleash 100% of my strength."

Fairy Yu Gu looked at Gu Xuan with a smile.

Gu Xuan shrugged his shoulders.

"Looks like it's true. However, this is a very troublesome matter, and I can't guarantee you this will succeed before we reach the Fire Phoenix Immortal Forest."

Fairy Yu Gu caressed the Jade Thumb Ring in her hands