Four unsolved mysteries in world history, two of which happened in China
1. Loch Ness Monster

In the world, many water monster incidents have happened. The Changbai Mountain Tianchi water monster incident is one of them. The most famous one is the Loch Ness monster incident that has been circulating for 1500 years. Sometimes people say they see it, and someone even photographed it accidentally. That’s why it has become one of the most mysterious mysteries in the world.
2. The thousand-year-old mystery of Sanxingdui

There are three mounds on the Chengdu Plain near Guanghan, Sichuan. Sanxingdui comes from this area. In 1986, two sacrificial pits were found from the Shang Dynasty in Sanxingdui. The discovery caused a sensation worldwide and is known as the “ninth wonder” of the world. There is no record of Sanxingdui’s history. Chen De’an believes that Sanxingdui people may come from other continents. Yu Qiuyu said, “A great civilization should be mysterious.”
3. The mystery of Mona Lisa’s smile

“Mona Lisa” is a popular portrait by Leonardo da Vinci. It’s his greatest work of art. Mona Lisa’s smile is mysterious and timeless. People have been debating her smile for 500 years. Some viewers feel differently about it based on when they see it. A few people claim to have seen two letters in her eyes: LV. Leonardo da Vinci created these letters to honor himself and let future generations know he’s mysterious.
4. The Mystery of Duliba Stone Butterfly

The Duliba Stone Disc incident happened in the Bayan Har Mountains, located at the northeastern end of the Qinghai-Tibet Plateau. In 1938, an archaeologist and team found many mysterious stone discs resembling alien disks. Professor Tsum from Peking University studied the hieroglyphs on the disk and quickly deciphered alien writings. The writing told a story of Duliba people who claimed they came from an alien planet. Their spacecraft crashed on Earth, and they were scared to be hunted by primitive humans. So, they hid in caves during daylight and started a new life. The Duliba Stone Disk had a significant impact on China’s UFO history.