Write a short article about human life on other planets.

In 2020, man landed on Mars and found solid water at the poles. Then in 2040, humans landed on Mars and built immigrant villages on Mars.

In 2033, mankind conducted the "Mars Migration Village" led by China, and six countries participated in the research. Among them are 40 pilots from the United States, Russia, Britain, Germany, Japan and New Zealand. This plan was successfully implemented, and the first building on Mars was built in 2035. This building is made of tough super-oxidized glass fiber reinforced plastic, which wraps the building like an egg. The artificial ozone layer is mainly used to defend against ultraviolet rays, and there is an advanced air conditioning system to maintain the temperature of 23 to 28 degrees for people living in it.

In this case, a story is happening on Mars. ...

Ma Xiaolong and Ma Xiaofeng are twins. They immigrated to Mars in 20041year. They are not familiar with everything on Mars. From the day they landed on Mars, they flew around on Mars like a pair of birds.

One day, they were playing on Mars. Suddenly, they saw an alien spaceship, a bit like a warship. Then, a series of changes took place on Mars. The protective film on Mars is being destroyed bit by bit by foreign ships, and people living in it are terrified. Although there are space warships on Mars, the number is too small. We had to transfer reinforcements from the earth, but the communication system was destroyed, so we had to send people across the blockade. And this task, to Ma Xiaolong and Ma Xiaofeng two brothers and sisters. They took a letter written by the manager of Mars Village, boarded the spaceship and ran to the earth. ...

First, they observed the enemy's position and decided to rush out from the weak defense. When they rushed to the edge of the enemy's defense circle, they were discovered by the enemy and were heavily shelled. The spacecraft also fired shells and shot down several enemy ships. Just about to rush out, the enemy's larger aircraft carrier appeared in front of them. They thought: as long as the aircraft carrier is shot down, won't it solve the crisis? So they fired two shells at the mother ship, but they were too far away to hit it. At this time, regardless of their lives, they flew straight to the mother ship. The enemy's mother ship obviously saw them and fired 10 shells at them one after another. Although the first nine shells were dodged by them, the 10 shell just hit the missile launcher of their spacecraft, and the missile could no longer be launched. Ma Xiaolong said to his sister, "I am willing to trade my life for more people on Mars. What about you? " Ma Xiaofeng nodded heavily. So, their spaceship crashed into an enemy warship here, the mother ship was hit and exploded, and the enemy blockade was gone. People on Mars contact people on Earth and ask them to transfer warships. Sure enough, in a short time, the "local team" came and wiped out all the enemies.

To commemorate these two brothers and sisters, people built a stone tablet on Mars and carved their portraits. Every year, people on Mars pay tribute to them.