Weibo vid of a McDonald's in so. China during pandemic: "We've been informed that from now on black people are not allowed to enter the restaurant. For the sake of your health consciously notify the local police for medical isolation, please understand the inconvenience caused."

I cannot independently verify this particular instance but can confirm that very similar messages are being posted in southern China where most of the African expats are. The US, who China accuses of racism, has been speaking out on this issue: https://www.bloomberg.com/news/articles/2020-04-11/african-nations-us-say-blacks-mistreated-in-chinese-city