According to the provisions of China's Marriage Law, the legal conditions for marriage include reaching the legal age for marriage, not being a direct relative by blood, and collateral kinship within three generations. Article 5 of the Marriage Law of the People's Republic of China requires that both men and women are completely willing to marry, and neither party is allowed to force the other or any third party to interfere. Article 6 The age of marriage shall not be earlier than 22 for men and 20 for women. Late marriage and late childbirth should be encouraged. Article 7 Marriage is prohibited under any of the following circumstances:
 （1） Direct blood relatives and collateral blood relatives within three generations;
 （2） Suffering from a disease that is medically considered unfit for marriage. Article 8 Both men and women who want to marry must go to the marriage registration office in person to register their marriage. Those who meet the provisions of this Law shall be registered and issued marriage certificates. When a marriage certificate is obtained, the relationship between husband and wife is established. If no marriage registration is handled, it shall be re registered.