Song He lowered his head to look at the problem and fell silent.
Zheng Leisheng watched him nervously. After a moment, he said cautiously with a smile, "It's a difficult problem, isn't it?"
"It is pretty difficult." Song He nodded.
Zheng Leisheng quietly let out a sigh of relief and picked up his chopsticks to grab some food. His junior apprentice brother had solved the first problem on the spot, which had been rather embarrassing. Fortunately, the second problem had helped him save face.
"But it's only difficult to a limited extent. Saying it needs two weeks is too exaggerated. Five minutes, maybe." Song He added another casual remark.
Zheng Leisheng had been caught off guard. The chopsticks holding his food froze, and he turned around in astonishment—only to see his junior apprentice brother raise his pen again and furiously write out the steps!
Deng Puhe was also startled, raising his eyebrows. Clearly, he had not expected things to turn out this way either.
Zheng Leisheng could no longer sit still. He stood up and moved behind Song He, silently watching the newly written solution steps on the paper.
"Consider the multivariate polynomial ring C. The irreducible polynomial P2 defines a..."
"The projection map Π gives the ring inclusion map C3, thereby giving a map on the localization..."
"Because the corresponding map on the meromorphic function field δ corresponds to the known number of branch coverings, therefore..."
"Resolving the singularities of a singular algebraic curve is equivalent to normalizing the singular algebraic curve in algebraic geometry. Algebraically, normalization is equivalent to taking the integral closure of the corresponding coordinate ring..."
Song He wrote the final step, slapped the problem sheet to the side, and took a deep breath. "I'm done."
Zheng Leisheng immediately pulled out a fresh problem sheet from