What I understand is this. I hope you can understand that Sun Yat-sen University didn't take the national line because it is a 985 college, that is, 34 self-drawn colleges, which are ahead of the national line and have nothing to do with it.

Then you said that 360 55 90 is the economic line of CUHK, and the three lines must be realized at the same time, at least so many points. As for why he doesn't have the qualification of 385, it may be because his major is very good and 400 is enough for an interview. As for you, why don't you just score in 120? Because there is more than one major in economics, and the situation of each major is different, but generally only one line is announced to the public. So the specific situation depends on the notice of the department.

So choice is very important. The same score does not necessarily have the same treatment.

Good luck. I believe that outstanding talents like your seniors will shine everywhere.