What is beggar's day for?

China Valentine's Day, also known as Begging for Clevership Festival, Seven Clever Days or Seven Sisters's Birthday, originated in China. It is a traditional festival in China and some East Asian countries influenced by Chinese culture. On the night of the seventh or sixth day of the seventh lunar month, women seek wisdom from the weaver girl in the courtyard, so they call it "seeking cleverness". It originated from the worship of nature and women's needlework, and was later endowed with the legend of Cowherd and Weaver Girl, making it a festival symbolizing love.