How to convert Ningbo 2000 coordinates into national 2000 coordinates?

The method of transforming Ningbo 2000 coordinates into national 2000 coordinates is:

1. First, open the related attribute table in ArcGIS and determine the x and y of the latitude and longitude coordinates of Ningbo 2000.

2. Second, double-click X to confirm the relevant information. When finished, double-click Y to confirm the relevant information, and get the abscissa and ordinate of the geographic coordinates of country 2000.

3. Finally, the latitude and longitude coordinates in ArcGIS can be converted into geographical coordinates.