The Ji Canal River or Jiyunhe (Chinese: 蓟运河; lit.
'Ji Canal') is a semi-artificial river in North China Plain near the major city of Tianjin.
The total length of Jiyunhe as of today is about 145 km and it drains into the Bohai Sea near Tanggu.
In Ming dynasty, the channel was artificially broadened again to make it navigable to bigger ships.
Grains were shipped to Tianjin and nearby towns on this river, so it got a nickname of Grain River and was finally renamed as Jiyunhe which literally means Canal of Ji.