Three days later, Yuan Ming arrived at the Toad Valley on time. In the first stone house in the valley, he found Zhao Tong, who was lying down and reading a book with great interest.

"Senior Zhao, did you get the Yin Marrow?" Yuan Ming asked as soon as they met.

Zhao Tong glanced at Yuan Ming and closed the book reluctantly. He stretched and yawned lazily, then took out a transparent glass bottle from his pocket. Inside the bottle was a sticky black liquid that slid back and forth on the bottle wall.

"Don't worry, I got it. But it costs 200 contribution points, and the deal is done. No tricks." Zhao Tong said with a smirk.