Song He: "Katerina, are you a demon? By the way, your imitation of Xie Kefu's tone is spot-on!"
Xie Kefu: "Of course! I've known him much longer than you have!"
Song He: "How did he willingly hand his phone over to you? Is he an idiot?"
Xie Kefu: "We made a bet. We took turns asking each other math problems. He lost, so his phone ended up with me."
Song He: "Katerina, get on your main account. It feels so awkward chatting with you through Xie Kefu's account."
After waiting for a moment, a new WeChat message appeared on the phone. This time, it came from Katerina's account.
Katerina: "Let's get down to business. I took pictures of the entire Problem Wall and sent them to you. The problems are arranged from hardest to easiest. Take a look and see whether there are any problems after Question 80 that you're better at. The three of us should work together again this week and try to solve one. Let's make a name for ourselves on the forum!"
Song He: "You really expect me to solve problems? You think too highly of me. I don't have that kind of ability!"
Katerina: "Just take a look! Decide after you've seen them! I'm off to entertain some guests. Leave me a message if you find a problem you like."
Song He shrugged and put down his phone.
The most important thing he had to do right now was finish the Brain Circuit Model. As for the Problem Wall, it was irrelevant. At most, he could treat it as something to read in his spare time, skim through it to get a general impression, and leave it at that.
His gaze returned to the computer screen. He tossed a few capsules into his mouth and