Are Xinmi and Haikou both cities ?
Xinmi Xinmi (), formerly Mi County (密县), is a County-level city of Henan, China. It is under the administration of the Zhengzhou city.
G15 Shenyang–Haikou Expressway The Shenyang–Haikou Expressway (), commonly referred to as the "Shenhai Expressway" () is an expressway in the People's Republic of China that connects the cities of Shenyang, Liaoning, and Haikou, Hainan. When fully complete, it will be 3710 km in length.