Chinese New year is also called Spring festival/chun jie.
The whole festival usually last about 15 days. Chun jie usually lies between late January and early February.
Why there is no specific day of chunjie ? It is because the Chinese lunar calendar is based on a combination of lunar and solar movements,
When chun jie is approaching, Chinese people are busy doing a lot of preparations such as purchasing goods, cleaning the house, cooking traditional food, making spring festival couplets,and hanging spring festival pictures.