The crown prince system is an important component of the emperor system. It was established and gradually developed with the generation and development of the emperor system.
皇储制度是皇帝制度的重要组成部分，它是随着皇帝制度的产生、发展而逐步确立、发展起来的。
参考来源 - 宋代皇储制度研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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