The "Controller" of the Ring Section?

The Gundam that Gray Wind transformed into landed at the location Li Wenyuan had specified.

It was one of the control centers of the "circular world", responsible for maintaining the normal operation of various facilities in the section of the circular world she was at.

Not all of the rings in the circular world were residential areas. For the convenience of maintenance, it was artificially divided into four sections. Each section of the circular world was independent of the other and isolated by the "circular world connection structure". 

Although the total habitable area would be smaller, this would actually make the circular world more stable.

The "circular world connection structure" would cut off the connection in time when a problem occurred in a particular section of the circular world, preventing a chain reaction caused by the damage of that circular world's section which could have led to the collapse of the entire circular world.