Source:
https://scmp.com/article/559993/new-graffiti-kings

New graffiti kings

The series of thefts of manhole covers and other metal appliances on the city's streets over the past year must have scared many building contractors in town. At the intersection of Morrison Hill Road and Leighton Road, one of the busiest on Hong Kong Island, construction workers on a road project nearby are so desperate to keep their signs and metal fences safe that they have painted 'Do not steal metal' on an electricity connection point.

It is not clear if the warning sign is effective enough to fend off 'invaders', but LoDown thinks the words are pretty artistic and have a resemblance to graffiti painted by 'King of Kowloon' Tsang Tsou-choi.