Dalian Port has announced a plan to acquire about a 23% equity stake in Yingkou Port for RMB11bn ($1.59bn).
The port group said the move is an important part of the restructuring process of port assets in Liaoning Group.
Last year, both Dalian Port and Yingkou Port were integrated into Liaoning Port Group, which is operated by China Merchants Group.
In January, China Merchants issued RMB10bn ($1.47bn) worth of bonds to fund the development of ports under Liaoning Port Group.
Dalian Port and Yingkou Port are two major coastal ports in northeast China, ranked 8th and 9th respectively among Chinese ports in 2018 in terms of container throughput.