Is it illegal to close the epidemic area and deliver food by side door?

If it is a prevention and control arrangement, it is not illegal. It is illegal for an individual to seek benefits.

During the epidemic, those who intentionally spread pathogens from COVID-19 and endanger public safety may be suspected of violating the criminal law.

Among them, Articles 114 and 115 constitute crimes of endangering public security by dangerous means, but have not caused serious consequences, and shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years; If serious consequences are caused, they shall be sentenced to fixed-term imprisonment of not less than 10 years, life imprisonment or death.