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.
Qiaozhong Road Tunnel The Qiaozhong Road Tunnel (海口侨中路通) is a tunnel in Haikou, Hainan Province, China. It connects Qiaozhong Road with Yusha Road, and is the only tunnel in the city.