In which dynasty did the Spring Festival in China originate?

The Spring Festival, also known as the New Year Festival, sprouted in the pre-Qin period and was formed in the era of Emperor Wu of Han Dynasty. We should vigorously carry forward the excellent traditional culture condensed in the Spring Festival, highlight the theme of saying goodbye to the old and welcoming the new, wishing reunion and peace and prosperity, strive to create a festive atmosphere of family harmony, stability and unity, joy and peace, and promote the sustained and continuous development and growth of Chinese culture.