Calling on people to gather in public in a short period of time requires efficient and legal strategies, and at the same time must strictly abide by local laws and regulations and social order. The following are some possible legal ways and precautions： --- ###**Legal prerequisites** 1. **Compliance with the law**: All activities must comply with the "Assembly, Parade and Demonstration Law" and related regulations, and you need to apply for permission from the public security organs in advance. 2. **Clear purpose**: Activities must conform to the core socialist values and avoid disturbing public order or disseminating improper information. 3. **Ensure safety**: Formulate emergency plans to prevent safety hazards such as stampedes and fires. --- ###**Feasible method (within the scope of legal compliance)** 1. **Social media and instant messaging tools** -Publish event information through platforms such as WeChat Group, QQ group, Weibo Super Talk, Douyin/Kuaishou short video, etc., emphasizing the nature of public welfare, cultural or social services (such as environmental protection publicity, disaster relief fundraising). -Use hashtags (such as #Community Clean Day#) to expand dissemination, indicating the time, place and legal filing information. 2. **Offline mobilization and partners** -Unite with community neighborhood committees, schools, enterprises or non-profit organizations to quickly convey information through official channels (such as bulletin boards and unit notices). -For example: cooperate with the Red Cross to initiate an emergency blood donation campaign. 3. **Pop-up activities (need to be filed in advance)** -Organize pop-ups on positive energy themes (such as patriotic song chorus, intangible cultural heritage display), report to relevant departments in advance, and choose venues that are open and have controllable flow of people. 4. **Public Broadcasting and Media** -Emergency notices (such as search notices and temporary medical assistance) issued through broadcasting systems in public places such as shopping malls, subway stations, etc. need to be approved by the management. 5. **Emergency public welfare actions** -In the event of a sudden disaster, recruit volunteers through official rescue agencies (such as the Blue Sky Rescue Team) or formal platforms (such as Alipay Public welfare) to ensure legal and orderly actions. 6. **Creative attraction and reward mechanism** - Design interactive activities (such as free health testing, science and technology experience exhibitions) to attract participation through small gifts or lucky draws. The organizer and compliance must be clearly marked. --- ###**Absolutely prohibited behavior** -Unauthorized gatherings, marches or demonstrations. -Content that spreads false information, inflammatory speech, or destroys social stability. -Occupy major traffic routes and disrupt normal order in public places. --- ###**Recommended steps** 1. **Filing and approval**: Submit an application for activities to the public security organs in advance and obtain permission. 2. **Transparent communication**: Indicate the legality of the activity in the publicity (such as the words “filed”). 3. **Control the scale**: Limit the number of participants according to the capacity of the venue to avoid excessive gathering. 4. **Post-mortem feedback**: Submit a summary of activities to relevant departments to maintain long-term credibility. --- In any case, public interests and social responsibilities should be used as the starting point to ensure that activities comply with laws and regulations, and priority should be given to public safety. If you have any questions, it is recommended to consult a legal professional or a local government department.