Demon Yan taught them everything in his arsenal, and Meng Chao benefited from it a lot. The most direct effect from this was that the number of gray skills that were lit up had increased.
As he looked at the dense list of skills, Meng Chao was delighted. He really wanted to contribute more to the Dragon Citizens with every second he had.
There was something else. Perhaps he had been too conspicuous when he handled the problem known as Zuo Haoran, and perhaps Demon Yan as well as the higher management in the school had been praising his recent performance, because Meng Chao would often run into Principal Sun "coincidentally" in the school cafeteria.
Meng Chao wanted to show his skills to Principal Sun. After all, this famous Heavy Cannon had to be at least an elite citizen. Perhaps he might even be a legendary citizen or epic-level citizen.