[Photo provided to chinadaily.com.cn] A new book targeting China's rising butler market was launched Sunday in Beijing. The book, Chinese-style Butler, aims to provide a comprehensive set of guidelines with regard to the professional standards needed to become a qualified butler. Against the backdrop of China's wealthy families pursing a more professional and custom-made domestic service, demand for quality butler service is on the rise. But although the demand is growing, professional butlers are still rare. Zhang Ran, author of Chinese-style Butler and founder of Vage Home, a Bejing-