Yii, a composer, had before this, won the 11th BOH Cameronian Arts Awards (Malaysia, 2014). He also won the Malaysian Philharmonic Orchestra Forum for Malaysian Composers (Malaysia, 2007), bagged the third prize in the International Composition for Chinese Orchestra
(Singapore 2006) and the finalist of International Composers Competition "Città di Udine" (Italy, 2010).
Yii is recognised as one of the major voices among Southeast Asian composers of his generation. His music has been widely performed in Asia, America, and Europe by ensembles such as Ensemble Mosaik, Interensemble, Malaysian Philharmonic Orchestra, The Claremont Concert Choir, Singapore Chinese Orchestra, Hong Kong Chinese Orchestra, Birmingham Symphonic Winds, Pan-Pacific Ensemble and musicians such as Peter Veale, Christopher Redgate, Moritz Ernst, Jürg Henneberger, Maruta Staravoitava, Anne Harley, Luisa Sello, Duplum Duo and etc.
Yii has been teaching at SEGi College Subang Jaya since 2000.