Is there an oblique column in the composition of calligraphy?

No, when writing Chinese characters, the central axis of each character is perpendicular to the ground. A Chinese character is regarded as a line segment, and the central axis is the vertical centerline of this line segment. In the composition of calligraphy, the central axis of each word should be vertical, neither oblique nor oblique. Some calligraphers will deliberately break the traditional rules of composition, create some new artistic effects, and make the glyphs feel inclined visually, but this is not the common practice of calligraphy composition.