The difference between imperial edict and heavenly prison.

Zhao Prison and Tian Prison are both ancient prison types in China, but there are significant differences between them.

1. Imperial Prison, also known as Royal Guards Prison. The Royal Guards Prison was a secret institution in the Ming Dynasty, which was used to hold important criminals. It is a prison directly controlled by the emperor, which means that all the criminals in this prison were convicted by the emperor himself. For example, the Royal Guards in the Ming Dynasty was a kind of prison call, which was called "Ming made it by himself, regardless of the ancient system".

2. Heavenly prison, in feudal society, often refers to a place where there is a prison for holding felons. It is not only an institution within the government, but also a prison in the palace. According to the records of historians, Zhou Wenwang's imprisonment is the embryonic form of prison. In the Qin Dynasty, Tiancang was officially defined as a place where important criminals were held.

Generally speaking, imperial edict prison and heavenly prison are both types of ancient prisons in China, and they all have their own functions and characteristics.