Build a suitable camp, keep it dry, and avoid the possibility that water from valleys and paths may flow to you, because they can flood low-lying areas in one minute. Choose a camp away from natural disasters, including preventing rocks from falling late at night.
Learn how to use your natural environment to tell you when it will get dark, just as the distance between the sun and the horizon can give you an estimate of sunset time. Put your hand in one place, let the sun be on the pointer, and count how many fingers there are between the sun and the horizon. Each finger is about 15 minutes. Even if it is not very accurate, it is very important if you need to plan your day and find a place to spend the night.
You need to look for clean water in the wild. When it comes to suspicious water, it is basically anything on the ground, such as puddles and streams. If you are not careful, water will hurt you. Your best choice is boiled water to kill 100% pathogens. Rain, snow and dew are reliable sources of clean water, and you can collect them easily. You can also squeeze water from vines or cacti. In order to make use of this pure water source, put a transparent plastic bag on the branches. When I come back later that day, the water will condense in the bag and be ready to drink.
If you happen to be trapped in the current, whether it is a small waterfall or a low dam with strong underwater current, the most important thing is to remember not to panic. It was a very difficult choice to roll up, fall to the bottom of the water, and then dive downstream by yourself, but maybe it was the only way for you to escape safely at that time.
To tell the direction at night, you need to find the Big Dipper. The Big Dipper is the seven bright stars in Ursa Major. It is shaped like a spoon. Because it is easy to identify, it is used to distinguish other stars. When you are in the northern hemisphere, as long as you find the Big Dipper, you can find the Polaris. Because it is located in the north pole of the celestial sphere for a long time, it is used as an indicator to identify the north. The way to find the North Star is to find the Big Dipper first. Extend upward from the mouth of the Big Dipper (Shu Tian and Tian Xuan) for five times, and you will find the North Star. In fact, if you watch the Big Dipper every hour at night, you will find that it has been slowly circling the North Star from east to west. On the other hand, Polaris doesn't move at all. It's always in the north. It travels and sails at night. As long as you recognize Polaris, you can point out the direction of the north.
Sometimes, when you are injured, you want to be rescued by maximizing your distress signal so that rescuers can find you. Signal fire is the best way. Put it on the top of the mountain, or in an open place where you can see it outdoors. Once the fire is lit, it will produce thick smoke, and the plane can see it.
Although fire is not absolutely important, it is one of the most important survival skills. It can keep you warm, cook, boil water, dry clothes, and there is a light source at night to make you feel safe and call for help. When traveling in the wild, be sure to carry firearms, such as flint, matches and lighters. However, sometimes you need to learn to make a fire without these tools. Learn to make a fire in various weather conditions, such as rain, snow, morning fog and so on.
Most wilderness areas have many natural food sources, from plants to insects to fish. Food sources vary from place to place. Ideally, you will change your diet to get as many different nutrients as possible.