On September 28, 2017, the Tianyan radio telescope in Guizhou, China, received a suspicious signal from 4 light-years away from outer space.

On September 29, 2017, Stephen Hawking solemnly warned China: "Don't answer! Don't answer!

On November 1, 2017, after careful consideration and analysis of the possibility of contact with extraterrestrial civilizations, the Chinese government decided not to let go of this once-in-a-lifetime opportunity, and believed that other countries would answer if China did not answer, and pointed out that this exchange may trigger a great leap forward in science and technology for all mankind, and China decided to answer.

On May 6, 2018, Chinese scientists announced the discovery of the layered structure of the sun, which can be used as an amplifier of radio waves to amplify human signals into the universe.

On May 7, 2018, Hawking warned China for the last time: "Don't answer! Don't answer!

On June 14, 2018, China replied with a message from the sun in the direction of receiving a signal 4 light-years away. The content includes an overview of the Earth's planets, an overview of the Earth's life systems, and basic information on world history, and the total information is 17.5KB. Historians have called this day the "Day of Restoration."

In 2018~2026, humanity has spent the last eight years of peace.

On July 9, 2026, radio bases around the world received tens of thousands of cosmic signals at the same time, all from the same direction four light-years away. In the face of such an abnormal signal, humanity has finally realized the danger and fear.

On July 10, 2026, the United Nations convened an emergency meeting to jointly study the decipherment of extraterrestrial information content and declared the world to enter a state of combat readiness.

On July 30, 2026, during this period of time, when the earth continues to receive a large number of extraterrestrial signals every day, the United Nations extraterrestrial information interpretation team was established, which gathered all the world's top scientists and immediately devoted themselves to deciphering and translating the content of these tens of thousands of extraterrestrial information.

On August 26, 2026, the United Nations decided on an international cooperation program and officially launched the Human Escape Program, in which countries drew up economic savings plans, population control plans, and began to devote themselves to space technology and space fleets. At this time, the Earth receives more and more extraterrestrial signals every day. Humanity knows that time is running out for itself.

On September 22, 2027, a year later, just as the world was building spaceships, the alien information interpretation team announced that the interpretation program had finally been developed!

On September 23, 2027, in the conference room of the United Nations Building, the heads of state stared nervously at the screen, the program showed that these tens of thousands of extraterrestrial signals were the same information, with the cracking of the computer, a line of words was clearly displayed on the screen, and human beings finally read the information from another world in the universe for the first time: &#^_^~〈?? ］ǒ$@·|ǎ。 ？*??

The translated content is:

"Earthlings, hurry up and send the Witch Detective Agency. ＂

Please copy and paste widely, haha, and I wish all readers a happy double festival!