Huairen County, Shuozhou City, Shanxi Province. Since Huairen County and Leiden City of the Netherlands are sister cities, in order to strengthen the friendship between the two places, the local government of Leiden City of the Netherlands and the social organizations of China and the Netherlands jointly proposed to donate tulips to Huairen County of Shuozhou City, which became a beautiful landscape of Shuozhou People's Park.