Just read some really thoughtful blog posts on being a foreigner in China, by bloggers who know.
The first is Foreigners in China: Weibo vs. Reality, and it essentially says that despite a few extra anti-foreign diatribes in the last month or so that have gotten a lot of media attention, day-to-day treatment of Laowai has really not changed:
Like with any country, China has plenty of unmitigated racists. But at least for me, they’ve never amounted to anything more than a very rare nuisance in my day-to-day life. So if you’re not in China, don’t get the impression from recent events that the country is a cesspool of xenophobia and hatred. And if you are in China, try not to let the recent coverage of online opinion skew the way you see things. The status quo for Chinese opinion about foreigners has been and will be for a long time more or less the same: Somewhat ignorant, but good-natured and curious.