The airport opened 20 years ago and has become a symbol of modern Hong Kong. It handles 1,100 passenger and cargo flights daily.
The area is estimated to cover 1.44 square kilometers. Work has started to attract businesses to the area.
The announcement came as airport operations were "severely affected" by a massive sit-in at its arrival hall.
The agreement with CCPIT, China's national foreign trade and investment promotion agency, was reached during DMCC's latest Made for Trade Live roadshow in the Chinese central city of Wuhan, the capital of Hubei province.
The ambassador made the remarks after British Prime Minister Theresa May paid a visit to China three weeks ago, during which the two countries signed a series of agreements related to trade, education, culture, science and technology.
The airline did not immediately respond to requests for more details about the passenger, such as his age or nationality.
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The analyst said the coronavirus pandemic had started a "durable trend" that could sustain "superior growth" for the company.
The agreement between Guangzhou Grandbuy's and Guangzhou Friendship's controlling shareholders - Guangzhou General Merchandise Group and Guangzhou Yuexiu Financial Holdings Group Co, respectively - follows SOE reform measures issued by the Guangzhou municipal government in August, and decisions from the Guangzhou Municipal State-owned Assets Supervision and Administration Commission.
The amendment states that "a well-regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
The airline said flight operation is expected to gradually return to normal by the end of July. So far, over 1,400 flights have been canceled due to the strike, affecting nearly 280,000 passengers.