The main consideration is that Putian's local light industry manufacturing industry is developed, and there are many businessmen engaged in this industry, which often needs to run business all over the country; Secondly, before the rebound of Putian epidemic was discovered, some Putian people had left Putian through various channels and came to other parts of China for activities; Moreover, before the rebound of Putian epidemic was discovered, many Putian commodities had been shipped to all parts of the country for trade reasons. The author believes that there are mainly the following three factors.

First, the local light industry manufacturing industry in Putian is developed, and there are many businessmen engaged in this industry, which often requires business from all over the country.

Putian's local light industry manufacturing industry is developed, and it is often processed by well-known sports brands or clothing brands at home and abroad, so there are many businessmen engaged in this industry. It is not excluded that after the rebound of Putian epidemic and before the start of the city closure order, a considerable number of businessmen engaged in Putian light industry manufacturing chose to leave Putian by various means of transportation in order to contact business partners. The spillover of Putian epidemic has certain potential risks.

Two, before the rebound of Putian epidemic was discovered, a considerable number of Putian people had left Putian through various channels.

Before the rebound of Putian epidemic was discovered, a considerable number of Putian people had left Putian area in various forms and rushed to all parts of the country. Because of the large flow of Putian population, it was easy to cause the spillover of Putian epidemic. Putian should not only implement the city closure policy immediately, but also inform other major cities where Putian people flow in to take corresponding epidemic prevention and control measures.

Third, it is because many Putian commodities have been shipped to all parts of the country for trade reasons before the rebound of Putian epidemic was discovered.

Before the rebound of Putian epidemic was found in China, many Putian commodities had been shipped to all parts of the country for trade reasons, which would increase more potential risks for the spillover of Putian epidemic, and this risk is explosive at any time. When the Putian government does a good job in the local epidemic prevention and control, it should also inform other cities where Putian goods flow in time to do a good job in the corresponding epidemic prevention and control measures.

Precautions: Residents in various regions should reduce the probability of people gathering in the near future, and take corresponding personal prevention and control measures to ensure their health and safety.