Why must we clean the house for Chinese New Year?

According to "Lv's Spring and Autumn Annals", there was a custom of dust sweeping in the Spring Festival in the Yao and Shun era in China.

According to folklore: because "dust" and "Chen" are homophonic, the New Year dust sweeping has the meaning of "get rid of Chen Bu Xin", the intention is to put all the poor luck, bad luck, and all the bad luck. Poor luck, bad luck are swept out. This custom is the wish of the people to break the old and bring in the new and the prayer of the old and welcome the new.

Whenever the Spring Festival comes, every household has to clean up the environment, wash all kinds of utensils, dismantle and wash the bedding and curtains, sprinkle the courtyard of the six capitals, dust the cobwebs and dredge the nullahs and ditches. Everywhere overflowing with the joy of hygiene, clean and welcome the new year's atmosphere of joy.

Lv's Spring and Autumn Annals (吕氏春秋) Explanation:

Lv's Spring and Autumn Annals (吕氏春秋), also known as Lü Duan (吕览), is a book of the Yellow Book and the Old Book of the Dao (黃老道家), which was written by the Qin emperor Lu Buwei (吕不韦). It was written on the eve of the unification of China by Emperor Qin Shi Huang. This book is mainly based on Confucianism, Taoism theory as the basis, the famous family, the legal family, the Mohist family, the agricultural family, the military family, the yin and yang school of thought as the material, fusion of all the hundred schools of thought in a furnace, sparkling with the light of profound wisdom. Lu Buwei wanted to use it as the ideology of the Great Qin after its unification.

Lv's Spring and Autumn Annals, as the twelve times, eight views, six theories, focusing on a wide range of doctrines, to the Taoist thought as the main body of the yin and yang, Confucianism and Mozambique, the name of the law, military and agricultural doctrines and through the completion of a work. But the main purpose belongs to Taoism? Therefore, the Han Shu - Art and Culture Zhi, etc. will be included in the miscellaneous family. Gao said "Lu's Spring and Autumn Annals", "this book is, in order to morality as the standard, in order to do nothing for the discipline", which shows that the earliest commentators have long been pointed out that "Lu's Spring and Autumn Annals" to the dominant ideological characteristics of the Taoist.