Why are so many tourist visas refused in Singapore?

Recently, tourist visas in Singapore have been repeatedly refused, and China Visa Information Network is also checking the visa materials of Singapore tourist visa applicants recently. Let's systematically analyze the situation that is more likely to lead to Singapore's visa refusal. Usually, there are the following cases in which the Singapore Embassy refuses to sign a visa: 1, young single women (in recent two years, many single women have applied for Singapore tourist visas and stayed in Singapore, which is the main reason for refusing visas) 2. Single women with household registration in Fujian, Northeast China and Henan (for the same reason) 3. They have been to Singapore before. Visa applicants who fail to leave Singapore on time within the validity period of the visa (individual applicants renew their visas legally in Singapore, but the Singapore Embassy in China only recognizes the endorsement at the embassy, and the local renewal is deemed invalid. ) 4. Visa applicants who are considered by the embassy to be a potential threat to public safety in Singapore. If the applicant's real purpose is to travel for a short time, and he can prepare the Singapore tourist visa materials according to the requirements of the embassy, then the rejection rate of the Singapore tourist visa is very low.