Chapter 223: What does grandpa mean?

Chu Han sighed, waved his hand and said, "Alright, alright, Sister Yafei, now that you know these things, just know them. However, these things are confidential and generally cannot be known to outsiders. It's good enough that they are passed to you. Don't let other people know. Is that clear?"
"Yes, yes, yes!" Chen Yafei nodded hurriedly and said fearfully, "I will never tell anyone! Absolutely not! Please rest assured, Mr. Chu!"
"Okay, let's...