华中及周边部分地区 (Central China)

1:66.65，以长江中游为中心，向外覆盖重庆、西安、郑州等周边地区。1949年开局，特大正方形地图。

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1:66.65.  Centered on the middle reaches of the Yangtze River, extending outward to include Chongqing, Xi’an, Zhengzhou, and surrounding areas. Starting in 1949, it features a Very Large square map.