Shen Wei is indeed not the best at reading people! (Though wrt the rapist dude, I'd defend him just a bit; it's not like he's had much opportunity to interact with him after Teacher Zhang asked to switch classes...) He also straight-up pushes Zhao Yunlan to comfort Dr. Cheng after Zu Ma's death, despite Dr. Cheng being his longterm friend whom Zhao Yunlan has spent less than 6 hours in the presence of. Oh, and he thinks "Don't worry, I'm used to getting hurt!" is supposed to be reassuring. His suboptimal childhood and the whole "time travel 10k years into the future" shows up in how he has trouble interacting with the hoomans on occasion.

As for Li Qian, well, he must be a newly-minted Professor, so she's likely his very first postgrad. It's apparently a bit like parenthood; mild overprotectiveness and excess concern is to be expected. I don't recall whether we get any other examples of him really interacting with a junior – though he's certainly responsible enough with the students on the field trip.