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Chinese Consul-General in Sydney Gu Xiaojie addresses a reception celebrating the 20th anniversary of Macao's return to the motherland in Sydney, Australia, Dec. 19, 2019. (Xinhua/Bai Xuefei)

Chinese Consul-General in Sydney Gu Xiaojie addresses a reception celebrating the 20th anniversary of Macao's return to the motherland in Sydney, Australia, Dec. 19, 2019. (Xinhua/Bai Xuefei)