The so-called HS course, heartsaver (heart saver), which mainly includes the most basic cardiopulmonary resuscitation skills and AED (automated external defibrillator) use of the training content, but also comes with some of the common first-aid treatment of medical and surgical teaching content. Currently, some of the major cities in China already have AHA authorized training bases, you can check whether there is an authorized training base in your location to decide whether to participate in the training.