There has been articles about similar thing happening in my country. Not only to Chinese people, but East Asians and even South East Asians in general who look like they could be Chinese. Personally I kinda understand if you know there is Chinese tourists around where you are and you might want to be careful, maybe if someone coughs not sit so close in bus etc, like maybe avoiding just tourist areas in general. Can be kinda shitty, but understable for me. In other hand I don't understand at all insulting strangers, bullying people etc. Like there has been even bullying Asian kids in daycare centers and schools here because of this, and someone told to newspaper their mothers friend told to her friend to not meet her anymore.. and that makes no sense you are just being asshole.