What are the problems reflected by the meeting between the Chinese student and American professor in the movie Dark Matter?

A、Theprofessordidn'tstanduptomeetthestudentandcrossedhislegsonthetable.Thisreflectshisgreaterpowerandhighersocialstatus.;
B、TheChinesestudentstoodupwhenheansweredquestions,andbowedbacktothedoorwhenhewasabouttoleave.Thisshowsthathehasalowersocialstatusthantheprofessor.;
C、Thepowerdistanceofthetwoculturesaredifferent.ChinahasahigherpowerdistancewhiletheUnitedStateshasalowerpowerdistance.;
D、Theprofessorspokefastandsomewordswerepronouncedvaguely.Iftheprofessordidnotneglectthestudentonpurpose,thelackofculturalsensitivitycanbeseen.