When mountain biking at night, the purpose of using lights is to ensure that you can see the road conditions, detect obstacles in advance, and improve your visibility to ensure safety. In fact, riding at night without lights is very risky and is generally not recommended or encouraged. However, if you must try to ride with almost no lights for some reason, the following suggestions can reduce the risk, but please be aware that this still poses serious safety hazards: 1. Know the route and environment in advance: • Choose a route that you are very familiar with, preferably one that you have ridden many times during the day and know all the turns, potholes and other possible dangers. • Try to choose a route without complex obstacles, low vegetation density and relatively flat terrain. 2. Choose the time to ride carefully: • Use natural light sources such as moonlight and starlight. When the moon is full or the night is bright, the eyes can adapt better and see the environment clearly. • Avoid riding on cloudy or dark nights to reduce the situation of limited vision. 3. Train your eyes to adapt to the night in advance: • Long-term training in low-light environments allows the eyes to adapt to the dark faster, but this adaptability also has its limits and cannot completely compensate for the risks brought about by insufficient night vision. • Avoid exposure to strong light (such as mobile phone screens or other bright light devices) before riding to avoid affecting the dark adaptation process. 4. Reduce riding speed and operate with caution: • Keep riding at a low speed to give yourself enough time to react to possible obstacles. • Road conditions are unpredictable. When encountering uncertain situations, slow down decisively or even stop to observe. 5. Travel with others and tell others about your itinerary: • Keep in close contact with your companions and take care of each other so that you can provide help in an emergency. • Before setting off, tell your route and estimated return time to someone you trust so that you can get help or rescue in time in case of an accident. 6. Consider backup safety equipment: • Although you plan not to use lights, you can carry emergency lighting equipment (such as flashlights or headlights that can be activated in an emergency) so that you can quickly activate them in case of emergencies. • Carry navigation equipment and sufficient mobile phone power to ensure that you can ask for help in case of getting lost or in an emergency. Finally, it must be emphasized that riding at night is inherently risky, and not using lights will further greatly reduce your ability to detect danger and avoid it in time. If it is not absolutely necessary, it is strongly recommended to use appropriate lighting equipment and comply with local traffic and safety regulations. Safety always comes first, and you should think twice before you act.