You can take the subway 1 line from Nanning East to Hangzhou Oxygen City. The specific route is as follows:

1. Walk about 790 meters to the East Railway Station and take the subway 1.

2. Drive along the direction of the Convention and Exhibition Center and arrive at the Convention and Exhibition Center Station after 7 stops.

Finally, you can walk about 230 meters to Hangyang City.

The above information is for reference only. You can also check the official website of the local subway transportation department to get the latest subway ride route information.