It should be noted that the son born to a "flat wife" is not an illegitimate child, but a "direct son", so sometimes there are two or more direct sons, but the direct son born to a flat wife is slightly lower than the direct son born to a direct wife.
It was a common phenomenon in ancient times that illegitimate children were inferior to their eldest sons. Generally speaking, it is impossible to accept sacrifices from ancestral temples and inherit the status of ancestors.
Extended data
1, direct line: refers to the direct branch of relatives.
Quotations: The first ending of Liu Qing's History of Entrepreneurship: "Yao Shijie found the immediate family members of two other villages that day and sold thirty-five stones of grain from upstairs to downstairs that night."
2. lineal: refers to lineal blood relatives or in-laws relations. Such as grandparents, father and son, mother and daughter and husband-wife relationship.
Xunzi: the son born to his wife refers to the eldest son.
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