What does the ancient red light mean? In ancient China, a red light generally meant that something important or a critical moment was happening. Because the lighting equipment in that period was relatively simple, the red light was an obvious indicator. Therefore, running a red light was widely used in political, military, economic and other important fields in ancient China.

In addition to the usage scenarios mentioned above, red light was also used to convey information in ancient China. At that time, the mail delivery speed was slow, so people would put a bright red light outside the post office to indicate that the post office was running, which could avoid misoperation and waste time and energy.

With the development of the times and the progress of science and technology, the red light gradually fades out of people's field of vision. However, this tradition has been passed down to this day. Today, some areas in China still use red lights to express auspicious and lively atmosphere at weddings, gardens, festivals and other occasions. At the same time, in major activities such as charity and disaster relief, lighting the red light also symbolizes people's concern and support.