What should be the stroke order of calligraphy cursive double-span writing?

This stroke order is not certain, depending on one's writing habits. If it is a regular script such as official script without couplet, the most common stroke order is left horizontal, left vertical, right horizontal and right vertical. If it is a running script, cursive script, etc., it is usually horizontal on the left, then vertical on the left, and then vertical on the right.