Brother is a Big Star - 4 Guan Ming seemed to take a particular liking to Ren Xin, insisting on adding her on WeChat. Ren Xin struck a pose and said, "If you want to contact me, you can go through my manager, Ren Sen. Otherwise, I might be very busy~" Guan Ming: "..." Busy with what? Weaning off milk? Ren Xin rolled her eyes. We only have a professional relationship; you're overstepping. On the day of the shoot, they needed to film a pilot episode, which involved capturing…