If you live in expat areas you quite likely get your internet served through HK or Macao which isn't filtered.

The roaming packages of foreign mobile users also don't get filtered.

If you are a Chinese citizen you most likely will be filtered, I've been to China multiple times companies will usually have a dedicated work station with HK internet the rest will be filtered hotels usually also get internet through HK not sure if this is only for foreign guests or not, on normal internet connecions Wikipedia and the likes were definitely blocked at least as recently as February 2015(last time I visited main land China£

Oh, yeah? Click on this: https://en.wikipedia.org/wiki/Tiananmen_Square_protests_of_1...