Are Xinmi and Haikou both cities ?
Haikou Hǎikǒu (), is the capital and most populous city of Hainan province, China. It is situated on the northern coast of Hainan, by the mouth of the Nandu River. The northern part of the city is the district of Haidian Island, which is separated from the main part of Haikou by the Haidian River, a branch of the Nandu.
Heyuan Héyuán () is a prefecture-level city of Guangdong province in the People's Republic of China. At the 2010 census, its population was 2,950,195 whom 903,871 lived in the built-up ("or metro") area made of Yuancheng urban District and Dongyuan County largely being urbanized. Zijin County itself is quickly being conurbated in the agglomeration. The majority of the people are Hakka.