Professor Zhao Zhihong was explaining companion stars to Li Banfeng, and during this time, he blew more than a dozen balloons, each with a different shape.
His obsession with balloons made Li Banfeng somewhat difficult to understand, but he was indeed a person with true knowledge and skill.
However, when discussing some concepts, the professor would be somewhat evasive. Li Banfeng asked: "What exchanges have taken place between the companion star planets and Earth?"
Zhao Zhihong's eyes flickered, and he shook his head slightly: "This has exceeded the scope of my research..."
Judging from his expression, Zhao Zhihong had researched such questions, but he didn't want to tell Li Banfeng.
Li Banfeng straightforwardly asked a more direct question: "Do you know Puluo State?"
Zhao Zhihong was taken aback and asked: "Who are you?"
Li Banfeng replied: "I'm a student from the School of Science."
"Do you have a student ID?"
