The three areas are the clean area, the semi-contaminated area and the contaminated area. The two channels are the medical staff channel and the patient channel.
Every time you enter the first-level area, the medical channel and the patient channel are completely separated. There is a delivery cabin made of two layers of glass and an ultraviolet system in the isolation ward. The patient's meals and medicines are delivered from this delivery cabin and disinfected by the ultraviolet system in the delivery cabin to avoid infection. Each ward has two beds and a separate bathroom, providing a safe and reliable working environment for medical workers under multiple protections.