"Want to take a break?" Xie Kefu looked exhausted.
The onlookers were tired from watching too. They all nodded and stared at Song He expectantly.
"No need. I'll win soon!" Song He sneered.
Xie Kefu froze, his smile turning tense.
After an hour of fierce battle, he had failed to break through Song He's defenses. Instead, he vaguely sensed that Song He was advancing toward his blind spots in knowledge. If this continued, he might really suffer a disastrous defeat!
However, with so many eyes on him, he couldn't afford to lose face. Xie Kefu braced himself and said, "Continue!"
"What kind of equation systems don't satisfy the maximum principle and comparison principle?" Song He asked.
Xie Kefu choked. He hesitated uncertainly, as if the words were right on the tip of his tongue but he couldn't get them out.
The onlookers' eyes lit up. Had the balance of victory finally tipped?
"Ask something else," Xie Kefu said.
"What do topological dynamical systems usually contain?" Song He asked with a smile.
Xie Kefu bit his lip for a long while, his face flushed from holding it in. "I don't know. Ask another."
"How many dimensions does a Kac-Moody algebra have?" Song He grew smug.
"I don't know." Xie Kefu's expression turned ugly.
"Whose equivalence relation is the homotopy relation of mappings?"
"..."
"What is the fundamental group of the continuous deformations of continuous mappings called?"
"..."
You had stumped Xie Kefu with your questions. He was terribly embarrassed. Resentment Value +300!
Xie Kefu was shocked by the progress in your breadth of knowledge. Resentment Value +400!
After more than ten consecutive questions, Xie Kefu maintained an awkward silence. His face shifted between green, red, white, and purple, as if he had eaten arsenic.
Song He finally stopped. "Are we continuing?"