Flight KR9755 operated by Cambodia Airlines arrived safely from Phnom Penh International Airport, the capital of Cambodia, to Sanya Phoenix International Airport under Hainan Airport shares, and will continue to fly to Singapore after Sanya, which is the first fifth air rights regular passenger route opened by Hainan Free Trade Port.

"Fifth air rights" is the third country transport rights, refers to a country or region in the operation of an international route at the same time, to obtain the right to stop and load passengers and cargo in a third country, is praised by the aviation industry as "the most abundant, the most economic significance" of the air rights, is one of the important ways to expand the international route network and develop the global market. It is also an important symbol to measure the level of regional opening up and business environment.

At present, ten ASEAN countries have reached an "open sky" traffic rights arrangement with China, and passenger flights from both sides are not subject to traffic rights and the number of airlines. The official opening of this route marks that Hainan Free Trade Port has gradually moved towards the highest level of opening-up in the world, which is of great significance to the implementation of the opening-up policy of Hainan's air rights, and also builds a convenient and smooth "air bridge" for economic and trade exchanges between the three countries.

Han Luhai, secretary of the Party Committee and chairman of Sanya Phoenix International Airport, said that after the opening of the fifth air rights, it can bring a large number of international transit passenger and cargo flow, accelerate the radiation and influence of the "air Silk Road", provide strong support for Sanya Phoenix International Airport to fully build an international regional hub airport, and help the construction of the core area of international tourism consumption center.