It seems the assistant's mind has been overwhelmed by an excess of knowledge, unable to think straight.
Nan Zhubin gave up on letting Mo Kai think of the answer by himself and instead proceeded to impart knowledge in one go: "It's not just about these two options."
Mo Kai's eyes were so clear that he abandoned thinking altogether.
He leaned slightly forward, trying to get closer to Nan Zhubin, as if this would help him better absorb the knowledge being imparted by Nan Zhubin.
Nan Zhubin thought for a moment; high concentration of knowledge is not easy to absorb, just like textbooks.
With a lecturer present, knowledge can be appropriately diluted, for instance by making a few analogies.
"Do you know the classic trolley problem? The one used to test people's moral dilemmas."
Mo Kai's eyes brightened a bit, finally catching up: "I remember."
...
