A military operation will be carried out in Bohai Strait and the northern Yellow Sea from Feb?12 to next Sunday, said a navigation warning released by China's Maritime Safety Administration on Friday.

The warning gave specific coordinates of the operation area but didn't reveal any details about the military task, noting that any entering would be prohibited.

In addition, live-fire exercises would also be conducted in parts of the northern Yellow Sea from Monday to Friday, according to another navigation warning post by the MSA on Thursday.