### Chinese: 根据通知，上述要求的时间范围为，从各省区市确定口岸城市范围并公告之日起，至2022年3月15日。
### English: According to the notice, the time frame required above is from the date when each province, autonomous region and municipality determines the scope of the port city and announces it to March 15, 2022.
### Errors: There is a minor error at "frame required above". There is a minor error at "and municipality". There is a minor error at "s". There is a minor error at "the port city". There is a minor error at "announces it to March".

### Improved English: According to the notice, the time range of the aforementioned request is from the date when the province, autonomous region and city determine the scope of port cities and announce it until March 15, 2022.