From VNexpress: HCMC Finds the Going Tough as Covid-19 Control Deadline Looms

I think Vietnam is doing everything they can to stamp out this virus.  The question (which perhaps is of theoretical interest for the rest of the world) is whether the virus can be defeated by strict lockdowns.  Last year the answer was definitely yes.  But with the much more contagious Delta variant, the answer remains to be seen.  

Also from the article:

For the final goal of expanding the green zone, mass testing has been ramped up across the city to isolate all possible infections in the community.

Yes, lots of testing going on.  Our apartment complex got tested on Saturday, so I've now personally participated in that 2021 rite-of-passage--The Covid Test.