Literature Reference: 'Yi' refers to the rows of dancers. Source from 'Shuowen Jiezi'.
'Xin' means joy. Source from 'Shuowen Jiezi'.
佾:
The procession of ancient music and dance.
欣: Joy, delight. In names, it often signifies happiness, symbolizing a life of prosperity and contentment.
Meaning: 'Yi' symbolizes order and harmony in dance formations, while 'Xin' represents joy and happiness.