C135 A Frog in a Well

"And what do you think of it?" Zhou Fann asked with a smile.

Wang Xi sat down next to Zhou Fann and said seriously, "There are one or two questions that are very difficult. I only wrote a few steps, but I didn't completely solve them. At least, I can get some steps to solve them. In addition, there are a few more difficult questions."

Zhou Fann asked