Calligraphy and painting, photos, manual amplification can use "nine squares" amplification method, scanner amplification, projector amplification and so on. "Jiugongge" is a boundary in the history of calligraphy in China, also known as "Jiugongge", that is, draw several large squares on paper, then divide nine small squares in each square, and practice calligraphy against the strokes of the model characters in the calligraphy book. It can also be used to copy paintings and photos. According to legend, Jiugongge was created by Ou Yangxun, a calligrapher in the Tang Dynasty.
Draw a number of square and unified squares on the original painting with a pencil, and then draw the same number of regular squares on the painting according to the required proportion for copying.
Scan the original painting, then expand it to the desired effect, print it, and then copy-copy it.
The projector has been extended. First, the original painting is photographed or scanned, connected to the computer, connected to the projector, and projected onto the draft.