Even though most of China is atheist, why are they so superstitious?

I also have the same question for the locals, and the answer they gave is that because it was the way it is for a long time, more like a belief turned into culture. The preference of male child has long been a practice. The number 4 and number 8 have some link in each other, possible superstition and fengshui involved. Ghost marriage and burning of things to get into afterlife seemed more like culture and tradition.