Recurring February 29

The protagonist Du Yi's birthday is on February 29th, which is the same birthday as the son of the family who took him in, so the younger brother celebrates the lunar calendar, while Du Yi can only celebrate the solar calendar. When it comes to his 20th birthday, the birthday he celebrates happily every four years keeps repeating, which makes him no longer happy, so he wants to break this cycle. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.