Table 2.

The importation risk distribution of top ten cities during phase two.

Top ten cities (total importation risk value)	Imported city (importation risk value)
Dongguan (522.04)	Shenzhen (373.21), Guangzhou (97.45), Chongqing (31.94), Foshan (12.54), Nanning (6.80), Beijing (0.04), Shanghai (0.03), Changsha (0.01), Chengdu (0.01)
Guangzhou (367.15)	Foshan (159.85), Shenzhen (105.70), Dongguan (80.50), Chongqing (18.16), Nanning (1.46), Changsha (0.87), Beijing (0.37), Shanghai (0.15), Chengdu (0.06), Hangzhou (0.02)
Foshan (301.94)	Guangzhou (242.04), Shenzhen (29.12), Dongguan (14.43), Chongqing (11.68), Nanning (4.50), Beijing (0.13), Shanghai (0.03), Changsha (0.01), Chengdu (0.01)
Shenzhen (280.34)	Dongguan (166.85), Guangzhou (62.44), Chongqing (30.60), Changsha (8.81), Foshan (6.83), Nanning (4.09), Beijing (0.32), Nanchang (0.20), Shanghai (0.11), Chengdu (0.05)
Shanghai (191.87)	Suzhou (57.47), Hefei (37.36), Chongqing (20.15), Wenzhou (22.29), Hangzhou (19.43), Ningbo (15.89), Wuxi (13.43), Nanjing (4.65), Beijing (0.62), Guangzhou (0.24)
Suzhou (157.07)	Shanghai (100.81), Wuxi (26.10), Hefei (13.88), Nanjing (10.72), Wenzhou (2.60), Chongqing (2.33), Hangzhou (0.39), Beijing (0.11), Ningbo (0.07), Guangzhou (0.02)
Hangzhou (155.97)	Wenzhou (91.44), Ningbo (26.13), Shanghai (19.09), Chongqing (8.71), Hefei (6.36), Suzhou (1.96), Beijing (1.18), Nanjing (0.68), Chengdu (0.13), Guangzhou (0.10)
Chengdu (126.42)	Chongqing (95.18), Shenzhen (7.75), Beijing (7.29), Xi'An (4.45), Shanghai (4.18), Guangzhou (2.94), Kunming (2.75), Guiyang (0.89), Wenzhou (0.79), Xining (0.16)
Beijing (105.08)	Tianjin (35.36), Harbin (20.48), Tangshan (15.65), Shijiazhuang (7.19), Chongqing (6.79), Xi'An (5.24), Changchun (2.65), Shenyang (2.63), Jinan (3.01), Taiyuan (1.57)
Tianjin (101.08)	Beijing (62.07), Tangshan (25.15), Harbin (6.88), Shijiazhuang (2.60), Jinan (1.36), Changchun (0.98), Shenyang (0.40), Chongqing (0.14), Yantai (0.10)