Is the cursive prefix in Gao Xiuqing's calligraphy correct?

Regular script is vertical and horizontal, horizontal and vertical. Running the script can also be vertical to the left and horizontal to the right, and then vertical to the top and horizontal to the bottom. There are many kinds of cursive writing, one vertical and one horizontal. The northern cursive script is generally written as such a cursive prefix, which goes around vertically to the left, passes through to the right, and hooks a little and a half arc downward.