During the Wanli period of the Ming Dynasty after the Longqing Revolution, the wave of silver monetization triggered by Zhang Juzheng's implementation of the "One Whip Method" launched a battle for water transportation hegemony and a silk war between two major business families. Through the Tianjin Wei Salt Diversion Competition, Songjiang Prefecture Cotton Dumping, Longjiang Shipyard Warship Transformation Merchant Ship, etc.
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