Zheng He was a Chinese explorer and diplomat during the early Ming Dynasty, known for his grand maritime expeditions. He led seven voyages between 1405 and 1433, reaching as far as East Africa and Southeast Asia, promoting trade and cultural exchange. His fleet consisted of massive ships called treasure ships, which were among the largest wooden ships ever built. Zheng He's journeys helped to establish China's maritime presence and fostered diplomatic relations with various countries, leaving a lasting legacy in the history of exploration and trade.