Locking down with one case emerge is Zero-Covid policy. If there's any other nation than China who can applies Zero-Covid policy, that's New Zealand. Many South-East Asian nations including Singapore, Vietnam, Thailand, Cambodia, Malaysia... are trying to open up their countries after vaccination coverage have reached certain level. These nations will acknowledge each others' vaccine visa.
I read the news Cambodia donates 200K doses of Covid-19 vaccine to Vietnam. Vow, when on earth the rich starts begging for help from the poor. It's ironic!