Tolong jelaskan mengenai 1980s dari South China AA dalam bahasa melayu

Since its foundation, South China had an all-Chinese Policy that only fielded Chinese players.  Even their foreign players were overseas Chinese players such as Edmund Wee, Chow Chee Keong, Chan Kwok Leung, etc.  Up until the 1980s, the policy was very successful. But when professional football took off in Hong Kong, the club could not cope with the influx of foreign players and performed poorly at the beginning of the 1981–1982 season.  On 2 November 1981, the club voted to end its over 60 years old All-Chinese policy.

Although the club was able to avoid relegation that season, it was not incident free.  On 6 June 1982, after the club drew an all-important match with Caroline Hill FC, the fans rioted outside the stadium that spread onto Causeway Bay.  The riot was the largest civil disorder in Hong Kong since the leftist riot in 1967.