No matter sitting or standing, you must have a back. For example, sitting: the best people are like sitting on the sofa. Feng Shui indicates that sitting on the sofa will make your hair grow, but sitting straight, leaning back against the sofa, sitting in an armchair and boss's chair are all good candidates, while sitting on the ground, stools and ferris wheels are all ok, and standing is the same, no matter where you stand. It is also good luck to choose such a WeChat avatar.
3. Shadow. Some people use their own shadow as a WeChat avatar for artistic sense. The human body is composed of "shape" and "qi". God is attached to form and soul to qi, so the relationship between form and qi is also the relationship between form and spirit. It is easy for China people to visualize their souls into images. When you were a child, a cultured adult wouldn't let you step on other people's shadows. In folk customs, being yang is like being yin. If you take the shadow as your head, your soul and head will cross each other in daily contact. So it's best not to use shadows as avatars for good luck.