In Shandong and other places, curtains should be round. First, put a few jiaozi in the shape of an ingot in the middle, and then place them neatly around the ingot layer by layer. This is the folk saying that "a circle is blessed".

. Some people even stipulate that no matter the size of curtains, only 99 curtains can be placed on each curtain, and they should be covered with curtains. Therefore, it can only be achieved by adjusting the spacing and row spacing of the intersection, which is the so-called "endless happiness".