When carrying out adventurous activities on unprotected construction sites, although it is possible to take some measures to reduce potential dangers, risks still exist. Here are some suggestions to minimize the risks: 1. **Risk assessment**: Before carrying out any activity, conduct a comprehensive risk assessment to identify potential hazards and risk sources. 2. **Safety equipment**: Make sure to wear appropriate safety equipment such as helmets, safety shoes, gloves and goggles to provide necessary protection. 3. **Choose a safe area**: Try to choose a relatively safe area for activities, avoid areas under construction and potentially dangerous places such as deep foundation pits, high-altitude working areas, etc. 4. **Team activities**: Try to carry out activities with others, ensure that there are people on the scene to provide help and also to supervise each other. 5. **Master skills and knowledge**: Have a certain understanding of the environment of the construction site, and master the necessary skills and knowledge so that you can respond correctly in an emergency. 6. **Avoid extreme challenges**: Try to avoid overly extreme adventurous activities, and choose relatively safe and simple challenges. 7. **Follow regulations**: Follow local laws and regulations to ensure that the activities do not violate any safety regulations. Despite the above measures, it is still necessary to be aware that unprotected construction sites are inherently risky and potentially dangerous, and to carefully assess whether to take risks. Ensuring safety is always the top priority.