"Damn your grandfather."
This sentence was actually a curse, and Mr. Su Bai didn't hide it or pretend to have any other tone; even so, Yao Zhe just chuckled twice, obviously not minding Mr. Su Bai's words too much.
The fat guy once said about Magicians: they only care about methods, they emphasize techniques over principles. Now it seems, it really makes sense. After Lucky slapped Yao Zhe's dog to death and Yao Zhe was beaten up by me, yet he could eat dog meat with me as if nothing happened, it already shows his mentality.
He's even more shameless than the fat guy, his moral bottom line is even lower.
Moreover, the other party spoke nonchalantly and with no embarrassment about the shady things his grandfather did back in the day, which illustrated his worldview is like that.