How to use mask in PS

First, I still remember the origin of the Mongolian version. When family planning was carried out in those years, red slogans such as "Good family planning" and "Good prenatal and postnatal care" were everywhere on the walls and telephone poles. . . , "what is typed out, what is typed out, just can't be born" and other signs of the times. If you draw this slogan, draw an edge first, and then draw it slowly, I think it will not be so smooth at that time. Since even the birth has been planned, the promotion must be planned. At that time, it was usually done like this: first write on a piece of cardboard, and then dig holes. Masking is to hide a part and show a part. It is the same as the mask in Flash, AfterEffect and other software. Second, there are two kinds of masks in PS: quick mask and layer mask. They have the same basic meaning, but they are used in different ways. Quick mask is mainly used for selection. There are three states of selection: all selected, unselected and semi-selected. It should be understood that the only purpose of the quick mask is for selection of a constituency. His area is a monochrome pattern, which we can manipulate to expand. You can also try to paste a pattern on the quick mask, and then get a very beautiful selection according to the brightness of the pattern color, which can make a very wonderful effect. Of course, you can also draw with a brush to get a variety of different constituencies, but at this time, the brightness of the pattern drawn with a brush determines the authenticity of the final constituency selection. Third, layer mask is the most widely used in layer mask. Now I almost don't make a selection on the original layer at all, just use a mask, because once I make a mistake, it is easy to repair it. Especially picture synthesis. Pay attention to whether you draw on the mask or on the original layer. You can carefully observe whether there is a white edge outside the thumbnail of the mask. If there is, it is on the mask. If there is a white border outside the thumbnail of the original image, it is drawing on the original image. Click the thumbnail to switch targets.