The real reason why the Forbidden City was struck by lightning

The real reason for lightning strike is that trolleybus is a common public transportation tool on the streets of Beijing today. But at 1957, the tram has just started to operate. That year, it was the period of frequent thunder and lightning in Beijing, and the tram became the target of lightning strike. Several lightning strikes occurred in Fuchengmen and Xizhimen power stations in northwest Beijing. This has attracted the attention of lightning protection experts. After analyzing historical data, they found that these areas belong to high lightning incidence areas. The experts thought of the Forbidden City, which often thunders and thunders. Through comparative analysis, experts have gained unexpected gains. Beijing is an ancient city with a long history. Six feudal dynasties built their capitals here. In addition to the superior geographical location, the developed water system is also one of the reasons. By comparing the water system maps of Beijing since the Yuan Dynasty, experts were surprised to find that almost all lightning-prone areas in Beijing are above several water systems. The location of the Forbidden City is one of them. Ma Hongda said: "In ancient times, the buildings in the Forbidden City were chosen according to the direction of the river. Starting from Shichahai, take the Forbidden City and then go to Zhongnanhai. " When the Forbidden City was just built, craftsmen finally chose a water system in the center of Beijing after repeated surveys. Using this water system, a moat was built around the Forbidden City, and a Jinshui River passed through the city. Later, the North Sea was excavated in the northwest of the Forbidden City as a summer resort for the emperor. But the craftsmen at that time didn't know that today, architecture has gradually got rid of the single residential value and been given more significance. The architectural forms are gradually enriched and the scale is constantly expanding. But just as Emperor Yongle didn't think about the harm of lightning strike, is there an unexpected danger lurking in modern architecture? The development of roads and water systems has also changed the resistance structure of soil, which reduces the resistivity and is easy to accumulate charges. This creates conditions for lightning to touch the ground. Tall and magnificent buildings, many cornices, and developed water systems. Taken together, these reasons are the real reasons why the Forbidden City has been repeatedly struck by lightning since its completion.