According to the general folk custom in the northern region, happy characters and manhole covers should be posted before sunrise on the wedding day. Paste the manhole cover with red paper according to the selected wedding route to suppress unlucky things. Sticking happy characters and pressing manhole covers are also very particular. Happy character is one of the national symbols of the people, which means to ward off evil spirits.

It is said that when we used to greet the wedding with a sedan chair, we should avoid the dry wells on the roadside, the ghosts in the Gu Zi 'an and the graves. So these unlucky things are all pressed by a pillar on the wedding road to prevent ghosts and unlucky things from falling on the bride.

With the evolution of customs, modern people use red paper instead of stickers and press it on the manhole covers of streets and roads for good luck.