Foreign Minister Wang Yi said on Sunday that China will provide all the services needed by every next of kin of those on board missing Malaysia Airlines flight MH370 and help them with their legitimate and lawful rights and interests.

Wang made the remarks at a press conference in Beijing on the sidelines of the annual meeting of the National People's Congress, China's top legislature.

The plane, carrying 239 people, including 154 Chinese, disappeared en route from Kuala Lumpur to Beijing on March 8, 2014.

"On this day one year ago, MH370 flight went missing. The year has passed, the plane has not been located, but the search efforts will continue," Wang said.

"Today must be a tough day for the next of kin of those on board MH370. Our hearts are with you," he said.

The Malaysian government officially declared on Jan 29 that the disappearance of the flight was an accident and said there were no survivors. China issued a statement on Jan 29 expressing its deepest sympathy to the relatives and loved ones of the passengers.

"Malaysia Airlines has started its compensation work. We will provide all needed services to every next of kin and help you uphold your legitimate and lawful rights and interests," Wang said.