Well done as my Nigerian friends would say. A well written and very true article. I am Australian and I have observed the treatment for many years in Asia to Africans and know many Nigerians in China that have been duped for their passport and visas paying thousands of RMB.
I have just returned to China after living in Nigeria for a year and everyday I was reminded I was a white person, oyinbo is the term in Yoruba over there, I always replied in fun dudu which would make them laugh even the police.

Wish every success.