The emperor lowered his eyes slightly when he heard Yi Qing.
Although that topaz was a piece of trash that didn't know anything, she knew about the things in that world. The Emperor would just treat it as a legend if he had nothing better to do, and also knew some of the terms they used.
Huang Jing didn't know anything. Yi Qing could make crossbows and possibly other things too.
When Xiao Jinghan saw the emperor like this, he knew that he was about to say something. "It's getting late. It's better for the emperor to go back and rest early."
The emperor cleared his throat. "I'm not tired."
Yi Qing also noticed the problem, but after thinking about it, he realized that there was no problem with what he had said.