What did Yin Nan mean before he appeared in court?

Yin Nan's expression before appearing in court means expressing his feelings with a musical instrument. Nanyin, also known as Nanguan, Xianguan, Nanqu and Nanle, is a traditional national music widely used in Minnan dialect, including Fujian, Taiwan, Hong Kong, Macao and Southeast Asia. It is a relatively rich and complete music type that has preserved the ancient music culture of China. Nanyin, also known as Nanqu, Nanle and Xianguan, is a Minnan dialect popular in Quanzhou, Zhangzhou, Xiamen and Taiwan Province Province. This kind of elegant music can often be heard in Southeast Asian countries where Chinese people live in southern Fujian.