Tanghulu once went viral on social media, but few people overseas know that it actually comes from China. It originated in the Southern Song Dynasty and has a history of seven to eight hundred years.
In traditional Chinese culture, red symbolizes joy and auspiciousness. So, each red and round Tanghulu represents reunion, happiness, and health. As a "limited happiness" in winter, you can always see "fancy" candied haws at Chinese New Year temple fairs.