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Strangelove reference!! *chef kiss*
How did the feudal Japanese realize the ore was valuable, was there knowledge spread from China or the west?
![Classes, Ranks, and Titles of Feudal Japan [Kamakura and Muromachi Periods]](http://i.ytimg.com/vi/0bbe7tGF6fo/mqdefault.jpg)
![Classes, Ranks, and Titles of Feudal Japan [Kamakura and Muromachi Periods]](/img/tr.png)
Strangelove reference!! *chef kiss*
How did the feudal Japanese realize the ore was valuable, was there knowledge spread from China or the west?