It should be "sex", which is a Chinese vocabulary, pronounced as fā nyú nf ù y incarnation, meaning willful or used to playing tricks. From Tang Du Fu's Poor Bank of Communications: "There is no need for shuyun to shelter from the rain."

Make sentences:

1, he is a personality man, you should be careful.

He is a capricious and profound person, so you should be more careful.

There is a lot of sex in the shopping mall, and people are all combined for the benefit.

In the financial market, people often make love by short selling.