Vacuum tank can be used instead, but attention should be paid to the method and strength. First of all, the vacuum tank has negative pressure, which is equivalent to massaging acupuncture points. But that's not enough. You can use the rapid cupping method to quickly flash cupping on acupuncture points under a certain negative pressure until the acupuncture points are flush or pop up. This is very effective for acupoint massage and dredging! ~ Wang Jingyuan, Beijing Panoramic Tongcupping Medical Technology Research Institute, has been engaged in cupping therapy research for more than 20 years. Combined with a large number of clinical experiences, the author compiled the "Panoramic TongShu Jing Cupping Therapy", which was published by China Ancient Books Publishing House. Interested parties can have a look! ~