Is the center of gravity of regular script words left or right?

When learning calligraphy, the concept of "center of gravity" is often mentioned. The center of gravity of a word is the center point of the weight of the whole word.

Accurately grasp the center of gravity of words when writing, so that the written words will not tilt up and down, and appear upright.

How to grasp the center of gravity of words is very important for beginners.