In the past, the license plate starting with 6h in Huai 'an indicated that Huai 'an license plate was Su H. According to relevant public information, the letter codes of license plate numbers of cities in Jiangsu Province were: Jiangsu Province (Su) Asu Nanjing, Su H Huai 'an, Su B Wuxi, Su C Xuzhou, Su D Changzhou, Su E Suzhou, Su F Nantong, Su G Lianyungang, Su J Yancheng, Su K Yangzhou, Su L Zhenjiang, Su M Taizhou, Su N Suqian and Su U Suzhou.