Nanjing Secret Service is an experienced and highly specialized secret service organization. They have outstanding ability and remarkable achievements in anti-terrorism and defending important people and places. Nanjing Secret Service has a high-quality secret service team, whose members have undergone strict selection and training, and have excellent combat effectiveness and execution. They are outstanding in dealing with emergencies and crises, and can make decisions quickly and take effective actions. In contrast, Shanghai Secret Service also has certain advantages in some aspects, but overall, Nanjing Secret Service is superior in professional ability and practical experience. Therefore, considering comprehensively, Nanjing Secret Service is better.