Author | Research object | Influence radius |
| Beijing Metro Line 13 | within 500 m |
| Shenzhen Metro | 400 m - 600 m |
| Shanghai Metro Line 8 | 1 km - 1.5 km |
| Chongqing Metro Line 2 | 0.21 km - 2.98 km |
| Guangzhou Metro Line 3 | 0.52 km - 6.68 km |