On June 30, Hong Kong's National Security Law was passed and officially implemented by the Standing Committee of the National People's Congress. As of October 7, the new law has been implemented in Hong Kong for 100 days and already many people have been arrested. The range of punishable crimes under the National Security Law includes "secession of the country, subversion of state power, terrorist activities, collusion with foreign countries or endangering national security by foreign forces.” The scope is broad and the effects it will bring about are difficult to predict. We visited Hong Kong residents from different industries and varied social roles and asked them to talk about the most subtle changes in their daily work and life a hundred days after the birth of the National Security Law.