This is the very definition of "zero-COVID".
They didn't abandon zero-COVID for another 5 months (Oct 21) when they finally admitted the data showed it didn't work.
Of course it's good they stopped using the strategy. But I remember vividly how the NZ PM promoted zero-COVID (and this was cheered by the media in Canada) as a working strategy until it no longer made sense politically or scientifically.
China has the bulk of the blame for continuing this failed strategy, but they were far from alone in the reasons why it was adopted it in the first place.