Important History about the law & judiciary in HK: racist laws & punishments and the tolerance of slavery by the British until 1923 香港法律和司法的重要歷史：種族主義法律和懲罰以及英國人對奴隸制的容忍直到 1923 年
https://repository.uclawsf.edu/cgi/viewcontent.cgi?article=1396&context=hastings_international_comparative_law_review