C209 End of Battle in Half an Hour

"Let's ride the donkey and watch the song. We'll see!"

Lin Cheng's face was full of confidence.

Old pedant, who was standing next to him, also had a rich expression on his face. He wanted to laugh, but he held back his laughter.

He knew very well about Lin Cheng's strength.

If he could solve a world-class problem, it was not a small matter to enter the national physics competition