The training exercise involved the deployment of the Liaoning, China's only known aircraft carrier, the Global Times reported Wednesday.
Quoting a Chinese navy announcement on Weibo, the Chinese social network, state news media said the Liaoning left its station in Qingdao on March 20 and conducted "annual naval drills" in the Yellow and Bohai Seas, off the coast of northeastern China.
The Liaoning and its accompanying fleet had completed training exercises in the South China Sea in January, a move that prompted Taiwan to scramble military jets and a ship to monitor their movements.
China also deployed the Shenyang J-15, also known as the "Flying Shark," a carrier-based fighter jet most likely based on the Soviet-designed Sukhoi Su-33.
The Navy carried out tasks including midair refueling, aerial combat and target strikes during aircraft deployment.
A helicopter conducted night landing drills and search missions, according to the report.
Although the exercises took place in March, they are being made public this week, a day ahead of the first summit between China and the United States.
The drills took place near North Korea, a possible sign Beijing is getting its navy ready for any potential instability on the peninsula, South Korean news agency Yonhap reported.
The deployment of the Liaoning to the area also coincides with the deployment of the U.S. aircraft carrier USS Carl Vinson to the peninsula during joint training exercises.
The Chinese navy said the training was a regular occurrence and part of plans to connect the navy and the air force, and further advance "technical tactical and operational training."