Yung Lo, also known as the Yongle Emperor, was the third emperor of the Ming Dynasty in China. He ruled from 1402 to 1424 and is known for his ambitious building projects, including the construction of the Forbidden City in Beijing. Yung Lo also sponsored the voyages of the famous Chinese explorer Zheng He, which expanded China's influence and trade in the Indian Ocean region. He was a powerful and influential ruler who left a lasting impact on Chinese history.