That's rotten serfdom culture still kickin' in, isn't it? You must've been in a jam in the PRC to have to resort to that kind of bottomfeeder!
Helen's shitty network is infamous on the net for treating expats badly. Of course, you can be maltreated by public employers in China as well as private ones, recruiters and agents too.
Many Chinese bosses treat their own nationals like shit, coz of rotten sefdom culture. That does not bode well for the way they'll treat their expat staff! Be warned, you readers out there - avoid Helen and her rubbishy company!
PS - Thomas, Yuncheng EV and Yuncheng IELTS are good agents imo and they'll place you in the boondocks if there're vaxancies to be filled. Salarywise, though - I dunno what you're lookin for! You can apply there if you like!