Chapter 686 Which school is this paper from?

When Chen Yu devoted all his efforts to researching stocks.

Xia Jing.

Daxia National Academy of Sciences, Mathematics Association.

"Lao Yang, come and take a look at this design plan!"

A silver-haired but energetic old man held a paper with excitement on his face.

"Lao Zhang, what's wrong? Why are you making such a fuss?"

The old man sitting opposite said somewhat dissatisfied.

"Quick, come here!"

Lao Zhang said excitedly.

"You guy, you are already old, but you still act like a young man, making a fuss."

Lao Yang rolled his eyes, but he still stood up and walked towards the silver-haired old man opposite.

"Lao Yang, look, I guarantee you will be more excited than me after reading it!"

Looking at Lao Yang coming over, Lao Zhang directly handed over the paper in his hand.

"Hey, so confident? Let me see."

Lao Yang took the paper, lowered his head and began to read.

"Wizard!"

Soon, Lao