Nullahs in Hong Kong
HF: My photos
plus https://en.wikipedia.org/wiki/List_of_rivers_and_nullahs_in_Hong_Kong
See: Open up Hong Kong’s rivers and drainage channels to revitalise city, expert says SCMP 13th January 2018
When Hong Kong textile mills were free to pollute Victoria Harbour and streams ran red, green, and yellow with run-off SCMP 12th July 2018
Indhhk article – Union Construction Co/Union Contractors (華聯建築)