The knee rhythm of Tibetan dance you mentioned is the most important flexion and extension in Tibetan dance. The habit of Tibetan dancing knee rhythm is inseparable from this nation. First of all, you should have a general understanding of the culture of this nation. The Tibetan people live in high mountains and plateaus all the year round, and the harsh climate and oxygen-deficient environment determine that the Tibetan people's attitude is not high. When you dance Tibetan dance, you must first pay attention to the posture, so that you can dance like Tibetan dance. Secondly, Tibetans are nomadic people. Different from farming culture, it must be different from the delicate and charming dances of ethnic minorities in the south of the Yangtze River. If you want to dance beautifully, you should pay attention to the enthusiasm of dancing. It is not difficult to master the law of flexion and extension when finishing. In your mind, you can imagine the rolling snow-capped mountains and endless horizon on the Qinghai-Tibet Plateau, extending to the law of knee movement that you need to pay attention to most. Remember that the knee is not completely straight or squat, but a flexible, stable and continuous trembling law. Remember to make it angular. Pay attention to these, I believe your Tibetan dance has made great progress.