What does it mean for Dai women to wear red lines on their wrists?

Seven color lines should be tied on your wrist to ward off evil spirits. Good luck. Usually worn on Dragon Boat Festival and cut on Torch Festival. Moreover, influenced by the Han nationality, Dai adults rarely wear this, and they are usually worn by newborn babies. Because the Dai people are mostly distributed in mountainous areas, with inconvenient transportation and little communication, the Dai people in different regions have different customs and habits.