C428 A King That Can Change the World(part Ii)
At this moment, Zhang Yunfeng had a calm smile on his face. He said to the tens of thousands of people below the stage, "The 4D map you saw in the opening video will be integrated with the GPS terminal of the Dongchen GPS system. At that time, we will provide a map of three modes for everyone to choose from. The first type is the traditional 2D map. The second is a 3D map on a flat surface