Why is it so strict to leave Wenzhou for a passport?

In order to maintain the reputation of Wenzhou. Passport is a proof that a person can't leave the country without a passport, and it can be handled all over the country. However, Wenzhou's passport processing is very strict, mainly because some Wenzhou people illegally immigrate in a legal capacity, which has affected Wenzhou's reputation. In order to maintain Wenzhou's reputation, passports will be strictly handled. Passport is a legal document issued by a country to prove the nationality and identity of its citizens when they enter and leave the country and travel or stay abroad.