China has vowed to keep searching for the missing Malaysia Airlines flight MH370 and another Chinese aircraft took off from Perth in Australia on Friday morning to join the hunt.

The People's Liberation Army Air Force spokesman Shen Jinke said at Friday's press conference that the Chinese Air Force is conducting its search with the support of Malaysia, Australia and other sides, and will improve its the quality and efficiency of the search "by all means."

Three aircraft sent by the Chinese Air Force since March 8 have flown 132,000 km and scanned an area of 181,000 square km, according to Shen.

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