Lai Ying Tong (Chinese: 賴映彤; born 4 January[when?
]), known professionally as Siu Tung (Chinese: 小彤), is a Hong Kong Cantopop songwriter, arranger and performer as well as music educator.
She graduated from the Chinese University of Hong Kong with a Master of Arts in Music.
[2] Lai works closely with the a cappella group C AllStar.
She always plays keyboards in their concerts, so she has earned the name 'the 5th member of C AllStar'.