What, exactly, was this "Sea Stabilizing Divine Needle"?
By nature, any tool capable of gauging a river's depth must span tens of meters, a size that presented its own logistical issues.
His analysis of the oracle bone scripts yielded a rough estimate of the needle's location. It appeared to reside near the modern convergence of the Luo and Yellow Rivers. But precision was a luxury they could not afford given the dynamic nature of the rivers.
The passage of millennia had seen the Yellow River's course meander dramatically, making finding similarities nothing short of an accomplishment. This approximation spanned not mere kilometers, but hundreds of them—an intimidating prospect for most.
