You're asking how vlone glows at night. The luminous or fluorescent patterns on T-shirts, cultural shirts and other clothes can only be made into various monochromatic colors, which can be solved by screen printing.

Luminous (also called reflective) is printed on clothes with a reflective glue, and then reflected by light. Signboards on expressways and clothes for workers on expressways are generally done in this way.

T-shirts and T-shirts made of fluorescence can glow by themselves in the absence of light. This material needs the irradiation of the sun and lamps to store light energy, and it will only emit light in a dark environment. The longer the time, the worse the luminous effect.