Jilin is landlocked. River navigation is possible from April to November. The major river ports are at Da'an, Jilin city and Fuyu. In 2007, Jilin started construction on a two-phase RMB60 million comprehensive river port; the first phase is finished. The port is on the Songhua River, has an annual throughput of two million tons, and will connect to the waterways of Northeast China. Aviation takes Changchun as the center, supplemented by Yanji and Baishan. It can go directly to Beijing, Shanghai, Guangzhou, Haikou, Ningbo, Dalian, Kunming, Hong Kong, South Korea, Japan and so on. Changchun Longjia Airport, Yanji Airport, Tonghua Sanyuanpu Airport and Changbaishan Airport, etc.