During New Year, you visit relatives to pay New Year's greetings.
Tips
usage
亲戚 refers to extended family (uncles, cousins, in-laws, etc.), not immediate family (parents, siblings, children). The second syllable is neutral tone in spoken Chinese.
culture
In Chinese culture, 走亲戚 (zǒu qīnqi, 'visiting relatives') is an important tradition during holidays, especially Spring Festival.