The plane took off.
Song He pulled out his phone and continued browsing medical biology papers, preparing for Lao Zhao's treatment.
Suddenly, a pair of long legs stopped beside him, followed by a laptop being placed on the small table in front of him.
Song He looked up in astonishment. Xiang Xiaotong was standing beside him. At some point, she had put on gold-rimmed glasses, and her expression was serious.
"This is your work, right?" Xiang Xiaotong pointed at the computer.
On the screen was a magnificent point cloud from Brain-Mimicking Programming. A closer look revealed that it was actually the program for Explosives Data Analysis!
"Yes, I made it!" Song He hurriedly nodded.
"I noticed that you introduced a Totally Geodesic Submanifold here. It's very novel. So far, I've only seen you do this. How did you think of it?" Xiang Xiaotong asked.
Song He's heart jolted. The spot Teacher Xiang had pointed out was the soul of the program. It was extremely well hidden, and most people would have overlooked it entirely, yet she had pinpointed the crux with perfect accuracy.
The difficulty was like accurately finding one disabled ant with a broken antenna among a huge swarm of normally busy ants!
He didn't dare delay. Pointing at the screen, he began explaining.
"This position is treated as a minimal submanifold S. The lowercase s is the scalar curvature of the manifold and has nothing to do with the surrounding space; it's an intrinsic invariant. So I thought that the uppercase S should also be an intrinsic invariant..."
"Got it!" Xiang Xiaotong suddenly interrupted him.
Song He froze. He had only just begun. Teacher, you already understood?
"But following your approach, besides the Totally Geodesic Submanifold you used, you could also use a Clifford Torus or a Veronese