A lot of people aren't very clear on the specifics of how it all came about, but many know that if it weren't for Ye Qingsi, Song Ergou wouldn't have been able to leave Beijing back then. Why it happened that way is probably only known to the real high-ups.
Let's not talk about that, and take a look at Song Yun.
After Song Yun hit Zhao Min, he acted as if nothing happened. As for whatever retaliation Zhao Min might have next, Song Yun wasn't afraid. If you keep provoking me repeatedly and I don't hit you, would I still be a man?
"Just you wait, this is only the beginning!" Song Yun thought to himself, "Once I get into the family genealogy, and my parents are also included, we'll see who has the last laugh. Zhao Min, Zhao Min, do you think hitting you has quenched the fire in my heart? Kirin, you've played games with me more than once, when I deal with Zhao Min, get ready for your turn as well!"