Legal analysis: Hainan is a low-risk area, the public in and out of the island only need to show the green code of Hainan health code can be, no need to carry a nucleic acid test certificate and other materials. There is no need to go through any formalities. But to other high-risk provinces need to be considered separately.
Legal basis: "Chinese People's *** and State Emergency Response Law" Article 49 After the occurrence of natural disasters, accidents and disasters or public *** health incidents, the people's government to perform the unified leadership responsibility can take one or more of the following emergency response measures: (a) organizing the rescue and rescue of victims, evacuation, evacuation and proper placement of threatened persons and take other rescue (b) quickly control the source of danger, mark the danger zone, blockade dangerous places, delineate the cordon area, traffic control and other control measures (c) immediately repair damaged transportation, communications, water supply, drainage, power supply, gas supply, heating and other public **** facilities, to the endangered persons to provide shelter and necessities of life, the implementation of medical care and sanitary and epidemic prevention, as well as other safeguard measures (d) prohibit or limit the use of relevant equipment, facilities, shut down or other emergency response measures. Restrict the use of equipment and facilities, close or restrict the use of the relevant places, suspend crowded activities or production and business activities that may lead to the expansion of the hazard, as well as to take other protective measures v) Enable the people's government at this level to set up the financial reserve funds and reserves of emergency relief materials, and, if necessary, call for other urgently needed materials, equipment, facilities and tools vi) Organize citizens to participate in the emergency relief and disposal work, and request the Personnel with specific expertise to provide services vii) to ensure the supply of food, drinking water, fuel and other basic necessities of life viii) in accordance with the law to severely punish the hoarding, price gouging, counterfeiting and selling of counterfeit goods and other acts of disruption of the market order, to stabilize market prices, and maintenance of the market order ix) in accordance with the law to severely punish the looting of property, interference with the destruction of emergency response work and other acts of disruption of social order, and maintenance of social security x) to take the necessary measures to prevent the occurrence of secondary, derivative events. secondary, derivative events of the necessary measures.