A Man in 1088 Built a "Time Machine" — 600 Years Before Europe. I Found His Secret in Xiamen's Archives.
Ever wondered who invented the ticking heart inside your mechanical watch? The little part that goes click-click-click instead of spinning freely? I used to think it was the Europeans. Swiss watchmaking. Seiko. The usual names. Then I opened the Xiamen City Chronicles. There’s a man in there. Su Song. Born in 1020, in Tongan, Fujian. And he did something that made me stare at my screen for five straight minutes. ...