Nuns must be baptized for more than 5 years before they can apply, and they must join a convent and study in a junior college for at least 6 years. In addition, to formally become a nun, you need to express your dedication to God through the process of swearing initial wishes, repeated wishes and lifelong wishes. After making a lifelong wish, you can't get married for life.
Extended data
A nun can't get married. She must be a brother who has been baptized for more than 5 years. Then write an application form and submit it to the junior college for an interview. I have been in junior college for 6 years, and I will make a wish every year during this period. Make a permanent wish after 6 years.
Three wishes are poverty, chastity and obedience to God. They call each other "nuns", and older nuns will also be called "old aunts". They live a collective life and will also go to work in the society, but their wages will be paid to the monastery.
References:
Baidu encyclopedia-nun