Which title is more serious, nail or fly book?

Flying books will be more serious. Because nailing is working software, many employees will be trained in advance before operation, so they will try to avoid employees with irregular operation. However, users in Shu Fei may be suspected of spreading false information during editing. If the nail is blocked, it can't work normally, but if Shu Fei is blocked, it can't use the original account to transmit important data. Whether flying books or nailing, as long as you read the operating instructions carefully before use, there will generally be no problems such as problems.