Year | 2005 | 2015 | ||
City | Relative proximity | Ranking | Relative proximity | Ranking |
Hong Kong | 0.89665499 | 1 | 0.864039 | 1 |
Singapore | 0.71953515 | 2 | 0.686221 | 2 |
Shanghai | 0.09794338 | 3 | 0.300914 | 3 |
Shenzhen | 0.04557051 | 4 | 0.000000 | 4 |