Malaysian Prime Minister Najib Razak said on Friday his country will do its utmost to find the wreckage of the missing Malaysia Airlines jetliner and answers related to the plane's disappearance.
He made the remarks a day after Australia said an area where acoustic signals were detected is not the plane's final resting place.
Najib told President Xi Jinping at the start of a meeting at the Diaoyutai State Guesthouse: "I can assure you that we will do our utmost to find answers to what happened to (flight) MH370. We owe it to the families. We must find the wreckage of the aircraft so that we can bring closure to this unfortunate tragic air event."
He said Malaysia expects to work with China, Australia and other countries because "this is too complex an incident ... and has never happened before in the history of aviation".
No country could handle this alone, he added.
The Beijing-bound Boeing 777-200 disappeared on March 8 after taking off from Kuala Lumpur. Of the 239 people aboard, 154 were Chinese.
Xi thanked Najib for the efforts made by Malaysia, together with Australia and other countries, in the search for the plane.
Najib also told Xi that a female tourist from Shanghai who was kidnapped in Malaysia in April has been released. The Malaysian government will escort her to China very soon, he said.