Please note that I am not a professional outdoor survival expert. The advice here is for reference only. If you plan to engage in outdoor activities, it is best to receive professional training in advance or consult experienced experts to ensure your own safety. The following are some basic wilderness survival tips when you have no equipment at all: 1. Stay calm and assess the environment. • Stop first and take the time to observe the surrounding environment to determine whether you are in a dangerous area. • Think about the nearest possible shelter or safe area and decide on the next action plan. 2. Find water sources. • Water is the primary need for survival. Look for fresh water along low-lying areas, streams, rivers or waterfalls. • If you can't find flowing water, see if you can use the condensation on the leaves of plants or the moister places in the soil (be careful not to drink untreated water directly to avoid illness, but in extreme cases you may have to weigh the risks). • If conditions permit, try to find some natural filtering methods, such as sand and stones (although there is no equipment, some impurities can be roughly removed through simple methods, but you still need to be cautious). 3. Build a temporary shelter. • Use natural materials around you, such as branches, leaves, grass, vines, etc., to find a relatively safe and dry area. • Find natural shelter, such as under a large tree, under a rock shelter, at the edge of a cave (be aware of safety hazards), or between two large trees. • Use long branches or vines you find to build a simple structure to help protect you from the wind, rain and sun. 4. Make a fire for warmth and signal • Fire not only provides warmth and cooking, but also can be used as a distress signal. • If you can find dry dead branches, leaves and other plant materials that burn easily, you can try to use friction fire (such as drilling wood to make fire or using stones to create sparks). • Friction fire requires suitable wood, hard materials and patience, which usually requires a certain amount of skill and experience. • Once the fire is successfully made, you can use the light and smoke to attract rescuers who may pass by nearby. 5. Find food • Only collect plants, berries or fruits that you are very sure are safe to eat. If you are not sure, it is best not to take risks to avoid poisoning. • Small insects are often a source of protein, but if you are not familiar with the insect species, you should also be cautious when eating them. • If conditions permit, observe the behavior of local animals to understand which areas may have more food sources, but remember not to take risks to hunt large animals or unfamiliar wild animals. 6. Navigation and rescue • Pay attention to the position of the sun, terrain features and natural signs (such as the direction of the river and the direction of the mountains), etc., to make a preliminary judgment on the direction. • If you are sure that you are not far from the exit, you can try to look for signs of human activities along the direction of the water flow or in low-lying areas. • Create obvious signals (such as arranging stones in a wide area, using branches to spell out SOS and other graphics) to facilitate rescue personnel to find. • If you have no mobile phone or other communication equipment, but have the opportunity, try to find a high place where you can receive signals. 7. Maintain physical strength and save energy • When encountering difficulties, stay calm and avoid unnecessary physical exertion. • Pay attention to keeping warm and prevent cold, to avoid heat stroke or hypothermia. • Take regular breaks and organize your thoughts, and set short-term goals according to the situation, such as finding a water source or building a shelter. 8. Mentality and will to survive • Stay positive and patient. A good mentality can help you better cope with various difficulties. • The will to survive is often the most important "tool" in an emergency. In short, when you are in the wild, every decision is related to the environment, climate and your own situation. Advance information preparation and basic training are crucial. In case of distress, please try to set up an easy-to-find distress signal in a safe situation, and try to stay calm and wait for rescue.