When a person encounters bad weather and unfortunately falls into a desert island, what three things should he take with him?

It is difficult to have a specific answer to this question, because what a person needs on a desert island depends on many factors, such as climate, resources, security and so on. However, the following are some items that may be needed:

1. Fresh water: Water is the source of life, so it is necessary to ensure an adequate supply of fresh water to survive on a desert island.

2. Food: Besides water, food is another basic requirement for survival. On a desert island, some edible plants and animals may be found, but they are not necessarily reliable. Therefore, carrying some dry food, fishing line, fish hook, Swiss army knife and other items can help you get more food sources.

3. Fire source: On a desert island, fire is very important, not only for baking food, but also for heating and defending wild animals. Therefore, it is also necessary to carry some kindling, lighters or magnesium blocks.

4. Accommodation: On a desert island, accommodation is a big problem. You can use the resources on the island to build a simple shelter, or you can bring some tents, ponchos, ropes and other items to build a more reliable shelter.

5. Signal tools: On a desert island, if someone passes by, you can get a chance to be rescued. Therefore, carrying some signaling tools, such as mirrors, flashlights, smoke signals and other items, can help you attract attention.

In a word, living on a desert island requires all kinds of things, which depends on the environment on the island and your own situation.