C428 The King Who Changed the World(part Ii)

At this time, Zhang Yunfeng had a calm smile on his face, and spoke to the tens of thousands of people below the stage: "The 4D map that you all saw in the opening video will be merged with the positioning system of Dongchen, and at that time, we will provide three modes of the map for everyone to choose from. First, the traditional 2D map. Second, the 3d map of the plane