Lu Guang is a calm, albeit slightly stoic and uptight. He’s usually quiet, and much more mature than Cheng Xiaoshi. Lu Guang has autism. He speaks in a monotone voice and he’s blunt. Sometimes, he’ll pace back and forth for no reason. Though it’s easier for him to catch on to social cues. He’ll often make comments that could be considered rude, but that’s him being honest. And blunt. He doesn’t smile often, but when he does, it’s at remarks that Cheng Xiaoshi makes.