远古时候，“门”是肯定没有的，因为人过的是原始的公有生活，东西少，人心也好，门就没有必要。随着社会的推进，物产的丰富，人们的私有观念跟着膨胀，门也就诞生了。“门”的作用，一是把外界隔离在门外，自己和家人关在门内；二是防盗，主要作用是为安全。t唐太宗李世民创 In ancient times, “door” is definitely not, because people live the original public life, less things, people’s hearts, the door is not necessary. With the advancement of society, the richness of property and the expansion of people’s private beliefs have led to the birth of the door. The function of “door” is to isolate the outside from the outside and close the door with the family; secondly, to prevent theft, the main function is to be safety. t Taizong Li Shimin Chong