Renowned for his mastery of watercolour effects, Alex Leong captures the traditional trades of Penang reminiscent of childhood. Several traditional businesses in the community such as bicycle repairing, puppet performance, and fortune telling are depicted from the artist's observation. With many solo exhibitions along his journey as an artist, Alex Leong has been actively participating in group exhibitions locally and abroad, e.g. Singapore, China, Indonesia, and Korea. His solo exhibitions include Watercolour On Canvas (2022), Celebrations & Nostalgic Moments, The Art Gallery Penang (2020), Magic Moments, Jada Art Gallery, Ion Art Gallery, Singapore (2018). His watercolour compositions of famous street scenes in Malaysia are well sought after by collectors.