Xinjiang Yilavender Base. Xinjiang Yilavender Base, located in Lucaogou Town, Huocheng County, Yili Kazakh Autonomous Prefecture, Xinjiang, is the largest lavender manor in China. Yili is known as the "South of the Yangtze River". As early as 1964, lavender in Provence, France, was introduced to the Ili Valley and settled in Ili.