Still a lot of precautions.
Everybody in SH wears a mask in public.
Well, except at bars, cafes, restaurants.
Some stores and buildings temp check everyone entering.
Apt buildings and courtyard entrances are manned by a guard, and you can't enter unless you live there or have a resident invite you.
People still encouraged to wash their hands frequently, and to limit their contacts.
I played basketball at one park on Sunday and kept my mask on the whole time I played. One other guy put on his mask after a third team came over to our court and then plus a few spectators came over to our court. At other baskets usually just one maybe two guys wear a mask while playing. There were probably 50 guys at the 4 baskets. The main downtown court has 6 baskets but for now is only admitting 30 people at a time. So basically two games and 4 baskets for shooting around.
Not really sure how long precautions will remain in place. I assume they want to clear all the cases, and then stay vigilant in case of a 2nd wave. International flights into China fairly limited (Aeroflot stopped all international flights last week), and all arrivals are being screened, and those who need to are tested.