What we see out here is a bad image of the chinese people.
The parents of chinese children are building a bad society.
Parents have given their children very bad impressions about Africans.They claim to the contrary that Africans have bad odour, that if you touch an African you will have a stain, that Africans leave on trees etc.In the job market, especially in the teaching field, employers would want to pay Africans lower than the so-called(and least(not less) qualified) native speakers.They are sowing seeds which they shall harvest with tears.

Chinese employers believe that TEFL and other language certificates can work for all disciplines in a school internal curriculum.A languaguage teacher CANNOT TEACH TECHNICAL SUBJECTS LIKE MATH, STATISTICS AND THE SCIENCES.A SCIENCE/Math TEACHER however,CAN TEACH ENGLISH language.
Employers should not destroy the future of children in this part of the world with this syndrome of native speakers.