Jeremy Lau Ying-ting (Chinese: 柳應廷; born 20 November 1992), known professionally as Jer, is a Hong Kong singer, actor, and a member of the Hong Kong boy group Mirror. Apart from his group activities, Jer has also pursued a solo singing career, winning Best New Performer at the Metro Hit Awards, the Ultimate Song Chart Awards, the Chinese Gold Song Awards, and the Chill Club 20/21 Awards. In 2018, Jer quit his reporting job to audition for ViuTV's reality talent competition Good Night Show - King Maker, and finished in top 20.