Implement standard: AHA (American Heart Association) 2020 guideline for CPR and ECC
1. Pupil demonstration: one mydriasis and the other normal
2. Simulate standard open airway
3. Simulate free movements of upper limbs
4. External chest compression: display device and alarm device
5. Artificial respiration (Inhalation): display device and alarm device
6. Operating period: Ratio of compression and artificial respiration: 30:2 (one or two persons), complete 5 cycles.
7. Compression frequency: 100 - 120 times/minute
8. Compression depth: 5-6cm
9. Squeeze the bulb manually to simulate carotid pulse
