Where is the license plate number Gan E from?

[JosiahFitz]

Gan E is the license plate number for Tianshui, Gansu. The license plate codes for various regions in Gansu are as follows: Gan A for Lanzhou, Gan B for Jiayuguan, Gan C for Jinchang, Gan D for Baiyin, Gan E for Tianshui, Gan F for Jiuquan, Gan G for Zhangye, Gan H for Wuwei, Gan J for Dingxi, Gan K for Longnan, Gan L for Pingliang, Gan M for Qingyang, Gan N for Linxia Hui Autonomous Prefecture, and Gan P for Gannan Tibetan Autonomous Prefecture. The first character of the license plate is a Chinese character representing the provincial-level administrative region where the vehicle is registered, which is the abbreviation of the province, municipality, or autonomous region. The second character is an English letter representing the prefecture-level administrative region where the vehicle is registered, which is the letter code for the prefecture-level city, district, autonomous prefecture, or league.