Here is a crowd viewing a MIG-15 on display in downtown . It was flown to by a Chinese Communist defector in late 1959 or early 1960. While the details are written on the poster by the plane, my Chinese never got past recognizing a few symbols on buses so I'd know which one to catch, so I can't translate it for you.
One of the photo lab's functions was processing aerial reconnaissance film. In the spring of 1960, Lt. Colonel Tinsley walked into the lab proudly pointing to a spot in the middle of a print he was carrying. The spot was flying at well above 40,000 feet and whatever took the picture was way above that. Because it was a long time ago, I may be mixing my MIGs, but I think he said it was a MIG-21. In any case, it was the first evidence they had that a MIG of that generation was flying in Communist China.