The curious contrast made Zhang Feng unable to pinpoint his educational background for the moment,
"Are you really a high school student?"
Zhang Feng asked again, "I feel like your level of understanding could be raised a bit higher."
"High school is just high school." The bearded man waved with one free hand,
"Personally, I don't like lying about serious academic matters, and also, don't discuss academic issues with me anymore.
If you ask me academic questions in the future, I won't answer them again.
Because I'm tired, mentally exhausted."
There was one more thing he didn't say, he had only that one line to show off with: 'discoveries and inventions'.
Any more and he'd give himself away.
Zhang Feng didn't care about that, he just asked, "Who made this invention? Do you know about it?"
"I don't know." The bearded man shook his head, "But many 'materialists' can make it, why? Do you want to learn this craft?"
The materialists were those who made batteries on the wasteland.
