Is the purple MSI physiotherapy instrument useful after all?

No You might as well let your father play Tai Chi Chuan. It is good to exercise people's health without spending money. You have to persuade slowly. When people get old, they will be as stubborn and disobedient as we were when we were young. It is right that life lies in movement, which is an eternal law. There is nothing I can do, but you know your father. You can convince him, you can find a breakthrough. Train him to play chess, fish, dance and play Tai Ji Chuan. Only by carefully helping him to change, think about how the old man carefully educated us, can you calmly and slowly enlighten his old man to cheer! !