Beibei roams the magical starry world

After experiencing time travel to 10,000 BC, the friends felt that they needed to take a good rest and adjust to the jet lag.

So, the small submarine stopped, and the friends put on their diving suits and went on an undersea trip. They saw all kinds of marine life and had a seafood barbecue, and their fatigue was gone.

The friends gathered in a circle again and listened to the robot Xiao Cong telling the story of the past: "From 10,000 BC to 5,000 BC, we continued to observe the changes and development of human beings for five thousand years. During this period, we also We went to explore other planets in the solar system and found that only the earth has life, so we suspect that the earth is the star of life, and that the earth may have exported life forms to the universe a long, long time ago."

“In 5000 BC, human civilization was in the early stages of slow development. Representative civilizations include: Sumerian civilization in the Mesopotamia, Europe, Egyptian civilization, Chinese civilization and Indus Valley civilization.

"All passengers, please note that our time ship will depart in ten minutes. The first stop of this trip is the Mesopotamia in 5,000 BC." robot Xiao Congtong reported.

The friends lay down with their helmets on, relaxed their whole bodies, and found that they were in the time aircraft, and soon the aircraft began to take off.

In an instant, the familiar Euphrates and Tigris rivers appeared in everyone's eyes. The aircraft slowed down and flew along the two rivers. Soon it reached the middle and lower reaches of the two rivers, and a plain appeared before everyone's eyes.

"This is the Mesopotamian plain, and the Sumerian civilization in the two river basins is here." said Dayan Xiaoxiong, who had previewed his homework in advance.

"Tch! I also know that the Euphrates and Tigris rivers provided the Sumerians with abundant water sources, and the Mesopotamian plains provided the Sumerians with fertile land. This enabled the Sumerians to develop agriculture here. Established a city-state and engaged in various handicrafts and commercial activities." said Wolf Spider Hawk and Wasp.

"You two are great! Your answers are accurate, 100%." ​​Xiao Cong, the robot, encouraged.

The time ship flew into southern Mesopotamia, present-day Iraq.

"This is the capital of the Sumerian civilization a thousand years from now." Xiao Cong, the robot, introduced.

The friends watched the time ship fly over the tall city wall and fly into the center of the city, where the temple is located. There were many short and fat people with round heads, backward foreheads, big eyes, and straight noses. He wears a round hat on his head, a robe on his upper body, and sandals on his feet. Men wore their long hair loose, women put their hair on their heads, and people with various accessories on their bodies gathered in the temple.

Today is the day when the king of the Sumerian city-state pays homage to the temple. The king of Sumer is called "Lugar", which means "great man".

The Sumerian monarchs had round heads, big eyes, and straight noses. At this time, the monarch wears a crown, holds a scepter, wears gorgeous robes, and jewelry, and is surrounded by attendants and clergy from various federations.

As the auspicious time for the sacrifice arrived, the clergy brought the sacrificial animals, killed them and burned them on the sacrificial platform.

The monarch then went up to the high platform and prayed to heaven.

This was followed by the foundation laying ceremony of the temple.

The whole process was not completed until the evening, and the people gathered in the square left happily.

The period after that was spent in sacrifice.

The time ship took the friends to the Royal Library and saw the earliest Sumerian cuneiform books recording history, culture, technology, religion and other knowledge. These books cover areas such as mathematics, astronomy, architecture, and even a set of decimal notation and the Pythagorean theorem.

"The Pythagorean theorem means that in a right triangle, the sum of the squares of the right sides is equal to the square of the hypotenuse." Xiao Cong, the robot, explained.

The time ship took the friends to visit the pyramids and then flew away from Sumer.

"Compared with five thousand years ago, human social structure has been formed, and political systems such as monarchy and federalism have been gradually improved through rapid development, which has played a positive role in human civilization." Xiaohui sighed.

The time ship came to the Never River Basin in Spain. Beibei and his friends saw some people farming in the fields, some grazing, and some hunting and fishing.

Beautiful pottery with images praising monarchs and nobles was presented to top management.

Unlike 10,000 BC, when the social structure was based on family, it evolved into the current complex hierarchical system.

A large part of the harvest gained by ordinary people must be handed over to local managers and then uploaded layer by layer.

"This is the quarry culture, also known as the Nevers culture. It will die out after a thousand years." Robot Xiao Cong introduced.

The time ship came to Croatia and Bosnia, and saw a group of people seriously writing linear characters to record their culture, technology and history.

“这些是大约公元前四千五百年左出现的线形文字文化。大家熟悉的英文字母A 和B都是线形文字。其中：线形文字 A 出现在公元前 16 世纪，也就是公元前1600年到公元前1501年，在克里特岛出现。线形文字 B 出现在公元前 15 世纪，也就是公元前1500年到公元前1401年。”机器人小聪介绍道

The time ship took everyone to the present-day Ukraine and Russia, where they saw farmers cultivating and herding people. The spacecraft came to the urban trading area and saw exquisite pottery and goldware.

"European civilization at this time was mainly written, cities and complex hierarchical systems, which laid the foundation for future development." Beibei said.