How to divide a very long large picture into multiple small graphs on average?

First use the 360 browser to save the page as a picture, as shown in:

Then open the picture with PS, click Start-Open, find the location of the file, and open it.

Next, the slicing tool is found, and the default slicing tool and crop tool overlap. The slice tool appears when you move the mouse over the Crop tool by right-clicking the slice tool.

After the first good slicing tool, move the cursor to the picture position, point right, choose to divide the slice, come out the following dialog box: Here can be used as required horizontal and vertical two ways, you can also choose to select the number of copies you need or by pixel to cut (note: In pixels, the final is not necessarily equal pixels)

Choose OK after the point is OK, next is to save the cropped picture, "Save as Web Format", click on the Pop-up dialog box to determine the point.

How to divide a very long large picture into multiple small graphs on average?