The Forbidden City is a very important Ming and Qing heritage in China, and in addition to the cultural relics that have survived here, the building itself is valuable enough. Covering an area of 720,000 square meters, of which there are thousands of rooms, in order to protect this palace, our country has a special repair personnel here to overhaul, of course, in this process, but also found a lot of small details that were previously ignored, and these details make people sigh the wisdom of the ancestors.
The palace is the place where the emperor lives and works, they are surrounded by countless waiters, as long as a command, no matter which corner of the palace must receive the holy will in time, the emperor has a chief eunuch, generally speaking, the first layer of transmission is here, but there may be a lot of people behind, the general small instructions are also counted, if there is something unexpected in the palace, emergency call people that may not rely on manpower alone, in case there is an interruption in the middle, then the news will not be passed here to terminate it? Therefore, whether it is from the perspective of timeliness or security, it is not enough to rely on people to deliver messages.
And the Forbidden City has a special design, this is a trumpet-like thing, as long as it is blown, basically the whole palace people hear, and if this sound comes, it means that something big has happened, everyone has to be on the alert, this thing has a professional name called Shihai Whistle. This is not the most amazing, the key is such a very important thing, he designed it perfectly, and it is integrated with the whole palace, if you don't use it in normal times, you may not think it is such a useful thing.
From the appearance point of view, it is no different from ordinary pillars, and it can be seen everywhere in the Forbidden City, but the functions of the pillars are different, some are hollow, and there are alarm devices in it, and when people go to blow, the sound emitted from this device will be very large, plus the Forbidden City originally has an echo, so soon it can be heard in the whole palace, whether it is used to let the people inside escape, or to let everyone gather to resist the enemy, there are miracles.
In addition, the palace gate can often be seen, even if there is no assassin in the palace, emergency situations such as fire can also be blown, so that everyone rushes to the fire scene for the first time to fight the fire, of course, to say that the fire fighting efficiency of that era is not high, this can not all be blamed on the fire fighting is not timely, the ancients a bucket of water a bucket of water poured up is slow, plus most of those buildings are made of wood, the speed of fire burning is fast, so you can not complain about one aspect.
Of course, like our emergency alarm now, this thing can not be easily blown.