C619 Challenge Difficulty

"Since you've put it that way, I'll definitely take a leaf out of your book," Su Yi declared, as if it were the most natural thing in the world, and extended his hand towards Jiang Cheng.

"Hand them over."

Jiang Cheng produced the materials and placed them into Su Yi's waiting palm.

With a cheerful spin, Su Yi turned and made his way into the alchemy chamber