In 1626, Beijing witnessed one of the deadliest and most mysterious blasts in history. An enormous explosion ripped through the Wanggongchang Armory, a gunpowder storage site in the heart of the Ming Dynasty's capital. The blast obliterated four square kilometers of the city, killing around 20,000 people in an instant.
The explosion's force stripped victims of their clothing, flattened buildings, and was so powerful that people heard it 150 kilometers away. Historians estimate its energy matched the nuclear bomb dropped on Hiroshima. The catastrophe shook confidence in the Ming government and hastened the dynasty's decline. To this day, the exact cause of the Wanggongchang explosion remains a mystery.