Chan Dong-wah is one of Asia's last remaining master knife sharpeners. He can turn any dull kitchen knife into a chef-grade instrument. Chan, who is known as Uncle Wah by locals, explains how he does it and why he’s been doing this since he was 13.br br **Shop Address: 278 Temple Street, Yau Ma Tei, Hong Kongbr br 0:00 Hong Kong’s King of Knivesbr 1:40 A knife that’s truly sharpbr 2:25 How to sharpen a knifebr 3:48 How to be a knife sharpenerbr br Family Makes Paper the Same Way for 300 Yearsbr br The Factory Which Supplies Unbreakable Umbrellas for Kung Fu Filmsbr br Follow us on Instagram for behind-the-scenes moments: Stay updated on Twitter: Join the conversation on Facebook: Have story ideas? Send them to us at hello@goldthread2.combr br Don’t miss our stories, what’s buzzing around the web, and bonus material.