The correct stroke order of the number 8 is: from the upper right corner to the left line, form a semicircle, and then turn to the lower right corner to form a circle to contact the right line. The lower line and the left line intersect with the original line upwards, above the middle line, and finally the line reaches a position slightly away from the pen near the upper right corner. It should be noted that the written number 8 is not sealed.