1, written by the ancients on bamboo slips. In order to facilitate writing and prevent insects from eating, green bamboo slips are first dried with fire, which is called inactivation. Later, it generally refers to writing fixed works.

2. In the first working procedure of green tea processing, the picked young leaves are heated at high temperature to inhibit fermentation, so that the tea leaves keep their inherent green color, and at the same time, the moisture in the leaves is reduced, so that the leaves become soft and convenient for further processing.

I remember that before the invention of paper, the ancients carved characters on bamboo pieces. In order to make the bamboo pieces dry and easy to modify, they baked them on the fire. After the water in the bamboo piece seeps out, it is like sweating, so it is called "Historical Records". After the whole book is engraved, the green skin is cut off and the book becomes bamboo white, which is called "killing green".

Modern people summarize it as describing the completion of filming of film and television works. In other words, after the film and television works are "finished", the shooting content has been completed and there will be no major changes.

Of course, the word "killing green", like many idioms and allusions, is abused by modern people and I don't want to know more.