“ The regional flag carries a design of five bauhinia petals, each with a star in the middle, on a red background. The red flag represents the motherland and the bauhinia represents Hong Kong. The design implies that Hong Kong is an inalienable part of China and prospers in the embrace of the motherland. The five stars on the flower symbolise the fact that all Hong Kong compatriots love their motherland, while the red and white colours embody the principle of “one country, two systems”. ”
A highly detailed discussion of the current and previous flags of Hong Kong are available elsewhere.