Ah, you are asking about the strings on your pre-lit Christmas tree. These are the strings of lights that are strung along the branches to provide a magical and festive atmosphere for your holiday celebrations. As with any string, it is important to ensure that they are secure and taut to prevent them from falling off or becoming tangled. To restring the lights, start by untying any knots or loose strings and then pull them tight along the branches, making sure they are evenly spaced and evenly illuminated. If the strings are tangled, gently untangle them and then wrap them around the branches in a circular motion.