C386 Coiling Dragon Bureau

"What I have learned has a lot to do with mathematics, so I have to be proficient in this area. "Actually, this is nothing. I've even answered more difficult questions than this." Ye Yan smiled casually.

He did not brag. When he went out with his master to earn money, Ye Yan encountered a lot of strange things. Once, he encountered a deadly situation in a rich family. Ye Yan, on the other hand