我国古代，由于消防设施落后，人们在发生火灾时，往往束手无策，只有任其自起自灭，致使房屋财产转瞬之间化为灰烬。据史册记载，明代紫禁城内曾发生过几次大火灾，宏伟建筑、珍贵文物毁于一旦，损失惨重。明永乐十九年（公元1421年）四月一次火灾，将建造才一年后的銮宝殿奉 In ancient China, due to the backwardness of fire-fighting facilities, when people were in a fire, they often had no choice but to let them up and leave themselves, causing the property of houses to turn into haze. According to historical records, there have been several major fires in the Forbidden City during the Ming Dynasty, and the magnificent buildings and precious cultural relics were destroyed and suffered heavy losses. In the 19th year of Ming Yongle (AD 1421), a fire broke out in April and it will be built only one year later.