A president’s stolen rubbish changed their lives: artist duo on connecting with a Korean artist’s sculpture and naming their daughter after it

• Hong Kong-based artist duo and couple Zheng Mahler say that Kyungah Ham’s The Odessa Stairs – a sculpture made from salvaged waste – changed their lives
• The giant sculpture of a set of wooden steps was made using materials left outside the residence of controversial former South Korean president Roh Tae-woo