He stared at the line of words for a long time, then raised his head, looked out at the empty courtyard, and said, "Look at the stone under my feet. If I don't move it, it won't move. If I kick it, it will roll out. Is this 'force' my kick?"
Me: "..."
My mind is a little confused.
An emperor from two thousand years ago is discussing the first principles of mechanics with me?
"It should be... It should be." I stammered, "But this is just the most superficial concept. There are many more complex ones..."
"More complicated?" Ying Zheng's eyes lit up, "What else is there? Tell me."
I opened my mouth, and countless physical concepts flashed through my mind, but I didn't know which one to start with. After hesitating for a few seconds, I subconsciously reached out to touch the book, but saw that Ying Zheng had already held the book in his hand and turned to the second page.
