An aircraft conducts a test flight for the second phase of the expansion project of the Haikou Meilan International Airport in Haikou, south China's Hainan Province, July 30, 2020. The second phase of the airport expansion project started test flight on Thursday. (Xinhua/Pu Xiaoxu)

An aircraft conducts a test flight for the second phase of the expansion project of the Haikou Meilan International Airport in Haikou, south China's Hainan Province, July 30, 2020. The second phase of the airport expansion project started test flight on Thursday. (Xinhua/Pu Xiaoxu)

An aircraft conducts a test flight for the second phase of the expansion project of the Haikou Meilan International Airport in Haikou, south China's Hainan Province, July 30, 2020. The second phase of the airport expansion project started test flight on Thursday. (Xinhua/Pu Xiaoxu)

An aircraft conducts a test flight for the second phase of the expansion project of the Haikou Meilan International Airport in Haikou, south China's Hainan Province, July 30, 2020. The second phase of the airport expansion project started test flight on Thursday. (Xinhua/Pu Xiaoxu)