For people whose Chinese zodiac sign is going through a ben ming nian (本命年)—which is their zodiac birth year—wearing red items like socks is said to provide protection from bad luck during that year.

Wearing red during the New Year is believed to ward off bad luck and evil spirits, including any "bad guys" or negative forces. The color red is seen as protective, so it can help to repel bad energy and ill intentions from others.

This belief stems from ancient Chinese mythology, such as the legend of Nian, a monster that would terrorize villages. People discovered that Nian was afraid of the color red and loud noises, which is why many New Year traditions involve red decorations, firecrackers, and loud festivities to scare away evil spirits and harmful influences.