May I ask why the population structure of Macao changed from 1920 to 1927?

1920-27 population rises first and then falls 1924. A business group rebellion in Guangzhou led to a large number of residents taking refuge in Macao. The population of Macao suddenly increased to 193, 175, breaking through the 65438+ million mark for the first time. Therefore, after the suppression of the business group rebellion, most of the refugees who took refuge in Macao returned to Guangzhou, and the population of Macao declined. After 1925, the population of Macau continued to decline until 1936 on the eve of War of Resistance against Japanese Aggression, and the population was120,000. 194 1-45 The population rises first and then falls. During the Second World War, Portugal was a neutral country, and Macao was unaffected by the war, and became a refuge for the mainland and China and Hong Kong. A large number of refugees poured in, especially after the fall of Guangzhou and Zhongshan in 1938, the population increased from 1938. However, Macao did not take advantage of the temporary decline of its competitors, China and Hongkong, to develop its economy, but continued to take special undertakings as its economic lifeline. There are 700 to 800 casino staff, thousands of prostitutes and thousands of opium beds. Therefore, after War of Resistance against Japanese Aggression's victory, people who have avoided living in Macao, even the original Macao residents, have returned to their homes in the Mainland or moved to Hong Kong to settle down. 1945, the population of Macao dropped to about150,000. 1After the 1970s, Macao's economy began to develop. At the same time, the political and economic situation in the Mainland changed, and natural disasters caused some people to flow to Macao. In addition, the political turmoil in Southeast Asia and the wave of Chinese exclusion in Indonesia and other countries forced a large number of overseas Chinese to return to China, and some overseas Chinese settled in Macao, which brought about the population growth in Macao. In the first half of 1962 alone, 55,000 overseas Chinese flooded into Macao. In the past three years, the population of Macao has increased by 654.38 million, of which the natural net growth is only 6,655. During this period, the rise of textile industry in Macao absorbed many people, and there were nearly 10,000 textile workers in 1965. However, in 1967, Macao was seriously affected by the turmoil in the mainland, and its population decreased by 70,000 in five years. In the same period, there was a natural net increase of 1.3 million, and more than 80,000 people actually immigrated. With the political and economic stability and recovery in the Mainland, and more importantly, the soaring and sustained economic development in Macao in the late 1970s, employment opportunities have greatly increased and the population has gradually increased. Image reference: macaudata/macauweb/book125/insert/am12503101.

Reference: macaudata/macauweb/book1250024001