Regarding Song Luoshen's matter, Song Yun didn't think much about it after leaving the Song Family. After all, caught red-handed with evidence; you framed me for hiding drugs, I simply used your own methods against you, putting the drugs in your bag. Now the outcome is good; you've been caught, it's what you deserve. As for whether she'll be kicked out of the Song Family, Song Yun no longer cares. What he's more concerned with is whether someone is backing Song Luoshen.
Logically, Song Luoshen belongs to Song Dong's line, though Song Dong doesn't seem to have a close relationship with Song Mei Qin. Yet last time, Song Mei Qin proposed that her father goes to Song Dong's territory to execute a mission. Could it be that Song Mei Qin and Song Dong planned it? By assigning her father to Song Dong's territory, Song Dong can better do something to her father?
