Area B of Sanya Slope According to Baidu map, Sanya Slope Library is located in Area B of Sanya Slope, No.3 Huawei University Road 10, Songshan Lake Scenic Area, Dongguan City, Guangdong Province. The library on the central island of the lake, like a complete replica of St. Nicholas Church in Tallinn, Estonia, looks like a castle with a magnificent interior, and visitors can also take photos or read. The style inside is like a church, with a rich collection of books. Visitors can only visit it on the first floor.