在中国历史上，郑贵妃是明朝时期的一位著名后宫人物，她的生平和影响力至今仍被广泛研究。郑贵妃原名梦境，出生于北直隶顺天府大兴县（今北京市大兴区），她的家族背景不凡，她是刘邦的后人之一，其子孙关系图见下文。

万历九年（1581年），朝廷选取九嫔，其中包括了郑梦境。她因容貌出众，被册封为淑嫔，并逐步晋升为德妃、贵妃，最终成为皇贵妃，享有三十八年的宠冠后宫地位。

郑皇贵妃与王恭后的争夺太子的故事成为了明朝历史上的一个重大事件。由于王恭后的无宠亦无子，而神宗对她所生的皇长子并不满意，便加倍宠爱于郑皇贵妃，并有意立其子朱常洵为太子，这引发了国本之争、妖书案以及梃击案等一系列政治风波。

万历四十八年（1620年），尽管内阁反对，但神宗还是命礼部准备册立郑皇贵菲为皇后的典礼仪仗，遗憾的是，在举行之前，神宗便驾崩了。光宗继位继续进行这项任务，但最终未能完成。

崇祯三年（1630年）， Zheng Huanggui died, and her tomb was erected with the title of "Empress Dowager". She was remembered as a loyal and faithful wife to the emperor.

The descendants of Liu Bang (Han Gaozu) include many famous historical figures. The relationship between them is complex, but it can be summarized as follows:

Liu Bang's son: Han Hui

Han Hui's son: Han Dan

Han Dan's son: Han Qing

Han Qing's daughter: Married to Emperor Wu of Liang (Liang Wu Di)

Emperor Wu of Liang's daughter: Married to Emperor Ming of Wei (Wei Ming Di)

Emperor Ming of Wei's daughter: Married to Emperor Yuan of Jin (Jin Yuan Di)

From this point on, the line becomes complicated due to intermarriage between different dynasties. However, it is clear that Zheng Huanggui has connections to the royal family through her husband and his ancestors.

In conclusion, Zheng Huanggui was an influential figure in Chinese history who played a significant role in shaping the fate of emperors and their families. Her connection to Liu Bang's descendants adds another layer to her fascinating story.