The Mosuo are primarily farmers. Subsistence is mostly based on agriculture. Farmers work "seven hours a day and seven months a year". In the past, they cultivated oats, buckwheat, and flax exclusively. This changed under Han influence at the end of the nineteenth century. Since then, these farmers have also cultivated, among other things, corn, sunflowers, soybeans, potatoes and other vegetables such as pumpkins and beans. Potatoes were their main staple for a while until the mid-twentieth century when they began growing rice, which today makes up more than half of annual production. In recent years, subsistence for some Mosuo has shifted dramatically from agriculture due to a thriving tourist industry