If you draw a line across the Earth, you will discover a striking fact—pyramids, the Bermuda Triangle, Mayan civilization, Sanxingdui… many of the world's unsolved mysteries lie along the same line: 30° north latitude.

This invisible parallel is home to an extraordinary concentration of human civilizations and natural wonders. It cuts through the heartlands of the four great ancient civilizations, while also passing through countless phenomena that science has yet to fully explain.

Today, we trace this line together—from the foot of Mount Everest, down into the Mariana Trench, up to the ancient pyramids of Egypt, and across the Hanging Gardens of Babylon, where legend and wonder intertwine into myth. We also encounter China's Sanxingdui civilization, which seems almost from another world.

Pyramids

Even more puzzling is that many events along this latitude remain scientifically unexplained to this day.

In the Bermuda Triangle, ships sail in, compasses fail, signals cut off, and then they vanish without a trace.

In the Dragon's Triangle of the Pacific Ocean, countless ships and aircraft have mysteriously disappeared, leaving behind no debris at all.

Then there is the vanished Maya civilization, which combined precise astronomical calculations with the dramatic "feathered serpent descending" light phenomena on its pyramids.

The legend of 30° north extends through primeval forests, nourishing countless rare species, and giving rise to the civilizations of ancient Egypt, Babylon, India, and China. It even connects the journey of a fish that crossed oceans to find a new home.

Spotted Channel Catfish Breeding Farm, Dayan Lake, Jiayu County, Hubei Province

In Jiayu, Hubei—a small town in southern Hubei pierced by the 30th parallel—shares the same sunlight as lands far across the Pacific. In 1984, fertilized eggs of the channel catfish were brought from North America to China across the ocean. Many provinces attempted to breed and domesticate them, but only Jiayu succeeded first, thanks to its climate and water conditions that closely mirror those of the lower Mississippi River along the same latitude. It has since become Asia's largest breeding base for channel catfish fry.

A single fish reveals something profound: along 30° north latitude, life echoes life in a hidden yet resilient resonance. And unexpectedly, it also leads us to a place closely connected by water to Jiayu—the southern foothills of the Dabie Mountains and the northern bank of the middle Yangtze River, a place of remarkable vitality: Qichun. There, another secret of life's abundance and continuity is hidden—a mugwort that grows like a Möbius strip, endlessly looping through life and renewal.

 后记 

Mysteries of the 30° north latitude emerge one after another, like a book from which the answers have been torn out. But when you lean in and listen closely—grass and wood echo back. Life itself is the answer.