| Grade | City | Connectedness value |
| 1 | Luohe, Kaifeng, Huainan, Bozhou | −47.69 to 291.45 | 2 | Fuyang | −74.07 to −47.69 | 3 | Jining, Lianyungang, Xinyang, Yangzhou, Suzhou | −90.80 to −74.07 | 4 | RiZhao, Heze, Zaozhuang, Zhoukou, Liuan, Zhumadian, Linyi, Shangqiu, Pingdingshan, Xuzhou, Huaiyin, Suqian Xuchang, Huaibei, Yancheng, Suzhou, Yangzhou, Xinyang | −154.36 to −90.80 | 5 | Bengbu | −154.36 |
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