First of all, we need to prepare a square colored paper, a pen and a pair of scissors. The color of the paper can be chosen according to our own preferences. Then first, fold the two symmetrical tear corners of colored paper in half, then fold the left and right corners of colored paper in half, turn the lower left corner to the upper right, then turn the back corner back, draw the pattern we are ready to cut after folding, and finally, we use scissors to cut off the excess parts along the line. After unfolding, a window flower with fish every year is ready.

Window grilles are paper-cut pasted on window paper or window glass, which is one of the ancient Han traditional folk arts in China. It has a long history and unique style and is deeply loved by people at home and abroad. Window grilling is a characteristic art of farming culture, and the rural living geographical environment, agricultural production characteristics and social customs also make this local art have distinct Han folk customs and artistic characteristics.

In the past, no matter the north or the south, stick grilles was used during the Spring Festival. In the south, it is only posted when you get married now, but it is generally not posted during the Spring Festival. But it is still popular in northern stick grilles, and it is one of the paper-cut varieties. In order to set off the festive atmosphere, the paper-cuts posted on the windows in the vast rural areas before the Spring Festival. Generally speaking, the style of window grilles is relatively free, except for the "corner flowers" stuck at the four corners and the "group flowers" folded and cut, there are no restrictions on their outer contours. The theme of window grilles is very extensive, with a large number of drama stories. Window grilles are more common in the north.