3 kilometers. According to Baidu map, the distance from Haikou Guo Bin Bar to Xinda Business Building is about 3 kilometers, and the whole journey takes 30 minutes by car. The specific route is:

1. First walk 450 meters from the Ambassador's Bar to Hainan Bank Station, and take the bus 13.

Secondly, get off at Wang Fu Building Station.

3. Finally, walk 80 meters to Xinda Business Building.