@zhao_dashuai Maybe the question wasn't phrased clearly enough. What was meant is if the drone expended energy equivalent to that if it was stationary or if it did equivalent to that if it was moving at 50 kph.
@136Division A lot of martial arts you see in China are fake, many of the real martial artists escaped China during the cultural revolution and migrated to other parts of Asia. You might be referencing fake kungfu. That original lady in the video, one look can tell is fake kungfu.
@136Division Your video shows the cat stance from Karate. From what I heard it was developed by the Japanese to stand steadily on ships that rock a lot. Don't know true or not.