A child runs his fingers across the ridges and knots appliqued on to a piece of garment. His face lights up like a thousand-watt bulb and the smile has the power to melt the most hardhearted viewer in the room. The student of Hong Kong's Ebenezer School and Home for the Visually Impaired has just figured out how data travels on the internet by touching specially designed garments.

The scene is from a video in an ongoing exhibition at the Centre for Heritage, Arts and Textiles (CHAT), titled Interweaving Poetic Code. It captures moments from a series of workshops given to the students of Ebenezer School by the artist and educator Taeyoon Choi, with support from CHAT's Learning and Community team.