With Hong Kong, Macau (As Guangdong Z) and Foshan's detailed map (Nanhai District and Shunde District as Guangdong Y and X) A: Guangzhou B: Shenzhen C: Zhuhai D: Shantou E: Foshan (excluding Shunde and Nanhai districts) F: Shaoguan G: Zhanjiang H: Zhaoqing J: Jiangmen K: Maoming L: Huizhou M: Meizhou N: Shanwei O: Government administrative agencies P: Heyuan Q: Yangjiang R: Qingyuan S: Dongguan T: Zhongshan U: Chaozhou V: Jieyang W: Yunfu X: Shunde District, Foshan Y: Nanhai District, Foshan Z: Hong Kong and Macau
Note that Guangdong I is not exist, Guangdong O is designated as the exclusive code for government administrative agencies, so the blue O boarder.
