Why are thousands of trees in Tianan called marine classics?

The full name is the ocean classic Tianan Qianshu. The marine classic Tianan Thousand Trees is located in Moganshan Road, Putuo District, Shanghai. Its full name is the marine classic Tianan Thousand Trees, which can be called the marine classic or Tianan Thousand Trees. The marine classic Tianan Thousand Trees is a new landmark in Putuo District of Shanghai, which was designed by British architect Thomas who designed the British Pavilion of the World Expo.