The 15th day of the 1st lunar month is the Chinese Lantern Festival because the first lunar month is called yuan-month and in the ancient times people called night Xiao. The 15th day is the first night to see a full moon. So the day is also called Yuan Xiao Festival in China. It marks the final day of the traditional Chinese New Year celebrations, and usually falls on some day in February or March in the Gregorian calendar. This year, the Lantern Festival falls on February 11, 2017.
Hubei pepole held various activities to celebrate the Lantern Festival, eating yuanxiao (glutinous rice ball), watching Lanterns, guessing lantern riddles, watching Lion Dance, getting all their families united, etc. (hubei.gov.cn by Ruan Xinqi)