玊尔 （sù’er）是2019个人演唱会的主题。玊=有瑕疵的玉，尔=你。玊+尔恰巧又是“玺”的拆解重组。“玊尔”= 接纳不完美，拥抱真实、热烈、独一无二的自己。
他用 “红 / 白” 二分来解释人格两面。红色的我：内心真诚、热烈、有棱角的本我；白色的我：面向社会、在众人目光中呈现的自我。他在演唱会现场说：“所谓的‘瑕’跟所谓的‘瑜’，其实是造就独一无二的你。”
He put on the Su'er makeup himself, that touch of red is just like the flaw on a piece of jade.
Su'er （玊尔） was the theme of Jackson Yee's solo concert held in 2019. Su means flawed jade, and er means you. Coincidentally, the combination of these two characters forms the Chinese character Xi（玺）, which is part of his given name. Su'er conveys the idea of embracing imperfections and accepting your genuine, passionate and one-of-a-kind self. He illustrated two sides of human personality through red and white.The red side stands for the inner true self — sincere, passionate and unpolished.The white side represents the external self shown to the public under social expectations. He stated on stage: "Both flaws and virtues together make you uniquely yourself."