This is the 8509th most frequent Portuguese word.
yi
The word "yi" does not exist in standard Portuguese.
In this instance, 'Yi' is a proper noun representing a person's name.
Yi estuda na universidade todos os dias.
Yi studies at the university every day.
Here, 'yin' is used as part of the phrase 'yin and yang', referring to Chinese philosophy.
Você conhece o conceito de 'yin e yang'?
Do you know the concept of 'yin and yang'?
Again, 'Yi' serves as a proper noun, denoting a specific individual's name, highlighting possession.