Window of Heaven

The Tian Chuang (天窗, Tiān Chuāng), also known as the "Window of Heaven", is an organization of intelligence gatherers and assassins loyal only to the Emperor. In the drama adaptation, the organization reports to the Prince of Jin.

The first ever leader of the organization was Zhou Zishu. The leadership of it has currently been passed on to Duan Pengju.

Background
The organization was formed by Emperor He Lianyi of House Rong back when he was the Crown Prince. It was then single-handedly established by Zhou Zishu, who also became the very first leader of the organization.

There is no information of their numbers or whereabouts, no doubt their power could extend to the end of the earth. By the current events, it is already fully structured and strictly regulated.

If you enter the organization, it is said that there is no way out. Escape will only result in either death or being completely disabled. Those who leave the Tian Chuang actually still has their every move monitored. Information about who they were, when they left or where they died are all recorded in detail. The organization is like a giant spider web, from which escape was futile until you drew the last breath. There are no secrets in Tian Chuang whether it is about court business or peasant problems. Therefore; one of its rules is that if a person can still talk, they cannot leave the organization unless they are dead or asked for the Nails themselves.

Punishment
The Nails of Seven Apertures for Three Autumns (七窍三秋钉, Qī Qiào Sān Qiū Dīng) is the organization's famous punishment method for members attempting to leave the organization itself.

This punishment means that the person will be stabbed by poisonous nails into the seven most important acupuncture points on their upper body by internal force. That blocks their Eight Meridians, crippling their martial art skills, and their ability to speak or move. After three years, the poison will fully spread into their viscera, and they will kick the bucket. They will live their lives without purpose in those three years. The experience makes it worse than death itself.

However, even then, there are still some members voluntarily wanting to be put in near coma just to leave the Tian Chuang.

"Secret"
There is a secret about the Nails that no one knows about but Zhou Zishu himself. From then on, this secret might as well be buried with him and a rare few.

If all seven nails had been nailed in at the same time while the person was unwell, even someone with profound strength like Zhou Zishu would only have had one mere breath left to depart from the palace. Worse, he would probably become a lifeless lump of flesh before he could even cross the gate.

However, if you only do one nail every three months, this lets the body adapt to the nails until you can't tell them apart on your body. Death will still be inevitable in 3 years, and there will be an excruciating 18 months of pain. However, you will retain at least half of your core strength and can still behave like a completely normal person.

The method is said to drive people crazy with agony. However, Zhou Zishu personally found out that the rumor was unfounded after all. Not only is he still sane, he also feels like there is no other time in his life that he is this happy and at peace.