"That's a Tianyuan stone. We, the main branch of the Kong family, have a special method to identify the Tianyuan stone."

The middle-aged man whispered. Kong Wen's eyes moved slightly, and some memories suddenly appeared in his mind.

In that distant memory, the main branch of the Kong family of Jiuquxing did have a special technique. It was because of this technique that the Kong family could develop and grow on Jiuquxing, but the branch is not qualified to learn, so