19世纪英国科学家达尔文提出生物进化论,21世纪本人发现门似乎也在进化。门之初为了防御野兽,人们以荆棘栅栏为门,以免遭袭击。然后三国时,刘备三顾茅庐,广开纳贤之路,思贤若渴,被称为“广开纳贤之门”。后来唐玄宗时,宠爱杨贵妃,不理政事,重用奸诈的李林甫。藩镇割据,民不聊生 Darwin, a British scientist from the 19th century, put forward the theory of biological evolution. In the 21st century, I discovered that the door seems to have evolved. At the beginning of the gate, in order to defend the beasts, people used a fence of thorns as a door to avoid attacks. Then, during the three countries, Liu Bei took care of the Mausoleum, widened the way to the Yin, and thought for the thirst, and was called the “King of the Wide Open.” Later, during Emperor Xuanzong of Tang Dynasty, he favored Yang Guixi and ignored government affairs and reused treacherous Li Linyi. The town is separatist