There are two sayings in Chinese medicine: one is called "it hurts if you can't do it", that is, the meridians are blocked, and it hurts when you are stimulated during massage; There is also a kind of pain called "pain due to disloyalty", which means that there will be insufficient blood supply to organs or parts. If it doesn't hurt at ordinary times, it hurts only when you massage. It should be that the meridians and qi and blood are blocked.