A 100-metre length of it nicknamed “Chop Alley” has been the home of Chinese stone seal makers ... in stamps still line the alley, but the know-how involved in this ancient craft is fading ...

Third-generation seal engraver Yam Man-hong talks about preserving the craft at ... stone seal makers since the 1930s. Today, more than a dozen stalls specialising in stamps still line the alley ...