When I first went in 1989 they didn't sell Coke at all. It was a planned economy with major import restrictions, so if you wanted cola you had to drink Campa Cola, or Limca if you prefer Sprite & 7-Up. Then they liberalized the economy and Coke was everywhere.
In Beijing, in 1994, I was forced to listen to the entire Kenny G Breathless album at the most famous Peking duck restaurant, and people were selling bootlegs of the CD on the street all over town.