University of Bristol - Historical Photographs of China reference number: NA16-081. Image from an album in The National Archives referenced as ‘HONG KONG 3. Views of Hong Kong from the 1860s to the 1920s' (CO 1069-446). The round sign on the electricy pole on the left reads: CARS STOP HERE IF REQUIRED. According to the Hong Kong Observatory, the highest record of daily rainfall ever recorded in Hong Kong, is 534.1 millimetres - the 19th July 1926 rainstorm.