I don't know if you have seen the movie "The Martian Rescue": an American astronaut was left on Mars by a person because of an aviation accident, and after experiencing some measures of self-rescue, he successfully got in touch with his companions on Earth, and finally achieved a successful Mars rescue.

So what happens if you suddenly fall to Mars, and will The Martian be successful?
The environment that humans need to face when they suddenly fall to Mars is unimaginable
Each planet has its own unique planetary environment, and so far, the only planet that humans have found suitable for human habitation is Earth.
Therefore, if humans suddenly fall to Mars, then the living environment on Mars will bring people the first fatal blow. The temperature difference between day and night on Mars is very large, and people may be able to survive the temperature during the day, but at night, in the harsh environment of minus one or two hundred degrees, human beings cannot survive independently without the help of any tools and science and technology.
Of course, just like the protagonist in "The Martian", if he already carries a certain amount of aviation equipment, then there may be a certain possibility of surviving on Mars.
Is the self-help of the protagonist of "The Martian" reasonable? Is there a theoretical basis?
Everyone should understand such a truth, the film is always a movie, it is the product of science fiction and exaggerated facts under realistic conditions, and it is difficult to have a certain scientific and basis.
The protagonist of the "Martian" movie, after losing contact with his companions and being left on Mars by a person, the first self-help measure he did in order to ensure the basic food for his subsequent survival on Mars was to plant potatoes.
But growing potatoes on Mars, judging from the data we know from modern science and technology, is simply not possible.
Not to mention that there is no large amount of water needed for plant growth on Mars, the soil texture of Mars, because it contains special minerals, is definitely not suitable for potatoes to grow.
Therefore, the self-help method made by the protagonist in the movie "The Martian" is actually unscientific, and under realistic conditions, it is simply impossible to achieve.
Can he save in the "Martian" movie?
In the movie, the protagonist's tracks on Mars were discovered by the relevant aerospace workers on Earth, and the two made contact, and the protagonist finally flew to space successfully in the catapult return capsule, and successfully returned to Earth, and the Mars rescue was successfully completed.
However, the film is always a movie, and in a certain phenomenon, the final result is amplified, and it cannot be used as a factual basis for our scientific research.
Therefore, under more objective and realistic conditions, if it really happens that a person is "left" in Mars like the protagonist in the movie, it is more difficult to carry out the corresponding Martian rescue.
However, if it is really successful, China will never abandon any Chinese citizen, and to the greatest extent, with its best efforts, it will carry out corresponding rescues.
With the progress and breakthroughs in China's science and technology and space and aerospace fields in recent years, China's aerospace strength has been very strong, and it has been able to successfully carry out some rescue work in space emergencies.
Just like the protagonist in the movie "The Martian", in the face of a harsh living environment and desperate reality, he has not given up, but actively seeks to survive.
The same is true of China's aerospace industry, although it started relatively late, but we have accumulated thick and thin hair, step by step, have the courage to make breakthroughs and explorations, and finally achieve excellent results step by step, which is China's characteristic strength.