High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! 1950s in Hong Kong began after the Japanese rule ended in 1945 with sovereignty returning to the British. However, the Nationalist-Communist Civil War was renewed in mainland China. It prompted a large influx of refugees from the mainland, causing a huge population surge. The government struggled to accommodate these immigrants. Unrest in China also prompted businesses to relocate their assets and capital from Shanghai to Hong Kong. Together with the cheap labour of the immigrants, the seeds of Hong Kong's economic miracle in the second half of the 20th century were sown.