The Law on Inheritance of Marriage and Family in Hong Kong was enacted by the Legislative Council of the Hong Kong Government and promulgated with the approval of the Governor on July 1970. It is decided that July 7th, June1971010 shall be the "designated date" for the implementation of the marriage reform of this Ordinance.

The main contents are as follows: for marriages concluded on or after the specified date, monogamy is not allowed, and old and new marriages are regarded as old marriages, just like registered marriages now.

Extended data:

In China's traditional marriage system, in order to avoid the confusion of feudal inheritance, "monogamy" and "eldest son inheritance" became the basic principles of patriarchal clan system, which were clearly stipulated in the laws of many dynasties. However, in real life, the principle of "one wife" may not be universally observed, and sometimes there may even be a wife.

For example, Jia Chong in the Jin Dynasty had two wives, Li Wan and Guo Huai, both of whom were allowed by the emperor. Many houses with two wives and three wives can be found in the household register of Tianbao period in Tang Dynasty unearthed in Dunhuang. Polygamy is recorded in many stone carvings and literary works since then.

Noble men and ordinary men under certain circumstances can take concubinage, and the status of "concubine" is lower than that of wife. Therefore, monogamy in ancient China was actually a form of monogamy. Among the three, the wife is a formal spouse and must be legally married, which is called "the first wife" (or the first wife, the second wife and the first wife), and the children born are called "the first wife", which has the right of inheritance in orthodox jurisprudence.

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