What is the reason why Tang Yindian often beats?

The celestial eye is often opened in Tang Yin, and its beating indicates that it is on the pulse string. If you can feel glare or emptiness when you close your eyes besides jumping, that's it. If so, you can search the internet for special features, which is quite complete. After all, this possibility is very small. Probably related to qigong or meridian activities in Chinese medicine. Generally don't worry, let nature take its course.