The Mongol-led Yuan dynasty (1271–1368) ruled before the establishment of the Ming dynasty. Explanations for the demise of the Yuan include institutionalized ethnic discrimination against Han Chinese that stirred resentment and rebellion, overtaxation of areas hard-hit by inflation, and massive flooding of the Yellow River as a result of the abandonment of irrigation projects. Consequently, agriculture and the economy were in shambles, and rebellion broke out among the hundreds of thousands of peasants called upon to work on repairing the dykes of the Yellow River. A number of Han Chinese groups revolted, including the Red Turbans in 1351. The Red Turbans were affiliated with the White Lotus, a Buddhist secret society. Zhu Yuanzhang was a penniless peasant and Buddhist monk who joined the Red Turbans in 1352; he soon gained a reputation after marrying the foster daughter of a rebel commander. In 1356, Zhu's rebel force captured the city of Nanjing, which he would later establish as the capital of the Ming dynasty.