Under normal circumstances, the first stage of class society entered in human history was a slave society. The slave society in Chinese history fell into disintegration during the Spring and Autumn Period. Confucius once had a protégé who bought a slave from another princely state, which is a proof of the existence of the slave trade in the Spring and Autumn Period. From the perspective of world history, before the Civil War, slavery still existed in the Southern Region of the United States, and some media mentioned that there were still remnants of slavery in some backward areas of Africa today.
For Chinese, slave society is a distant memory thousands of years ago, so many people do not understand the shape and rules of slave society. For example, this question is what many people are curious about: the ancient slave society gave birth to children for slave owners, and whether the children born were slaves?
Personally, I believe that this problem needs to be based on specific circumstances.
Ancient Chinese situation
Regarding the attitude of ancient China to female slaves, the most typical should be the Qing Dynasty: because in the post-Jin Khanate era, the Post-Jin Dynasty was a slave regime that was feudalized after entering the Customs, but even so, there were still strong feudal remnants in the society of the early years of the Qing Dynasty. For example, the coating system is typical.
The Qing Dynasty's "Xinzhiku" was an institution that managed slaves. The eighth son of the Kangxi Emperor, Yin Yu, was born to a slave girl from Xinzhiku, but instead of becoming a slave, Yin Yu once had the opportunity to become emperor of the Qing Dynasty.
In addition, Liu Fa, the ancestor of Liu Xiu, the founding emperor of the Eastern Han Dynasty, was born to a maid in the palace. In the Han Dynasty, the status of the maid in the palace was no different from that of the slave, and it was actually a misunderstanding for the Han Jing Emperor and the maid to give birth to Liu Fa, but even if the Han Jing Emperor did not like Liu Fa anymore, he still had to appoint Liu Fa as a prince to do it.
Therefore, in ancient China, if a female slave had the children of the master, the status of the children depended on the attitude of the master. However, according to Chinese tradition, even if the father no longer dislikes the son born of himself and the slave girl, he will not treat him as a slave.
Situation in ancient India
Ancient India followed a caste system. The four major castes and the untouchables outside formed the five major classes of India, and this tradition still exists in many remote areas of India.
Ancient Indian belief in reincarnation (according to the Buddhist view of reincarnation is actually improved by the Brahmanical faith). In the ancient Indian conception, no matter how one is reincarnated, the hierarchical status of man does not change--for example, if a person is a Brahmin priest, then no matter how long he is reincarnated, he is a Brahmin priest, which is unchanged for eternity.
In ancient India, slave owners belonged to the second class: Chatri, while slaves belonged to the fourth class: Sudra. In terms of marriage, if someone dares to risk India's great discord and inter-class marriage, the legal power of ancient India will not tolerate it. Children born of inter-class marriages are also discriminated against as having inferior blood. In the context of ancient Indian society, most of them continued to be slaves.
Ancient Babylonian situation
The most famous of the ancient Babylonian civilizations is the Code of Hammurabi. According to this code, if the Babylonian slave owner had children with female slaves, the status of the children depended on the attitude of the slave owners.
In general, in ancient times, secular countries such as Huaxia were more enlightened about the status of the children of slave owners and slaves, while theocratic countries such as ancient India often focused on the theory of descent, so the children of slave owners and slaves were often regarded as lowly people and continued to be slaves.