The number of the authors for this year’s tourism green book reaches more than 70. The authors are from research institutions, colleges and universities, tourism enterprises, administrative departments, and tourist enterprises of Beijing. Based on their professional advancement in their working units, some of them focus on the study of Beijing tourism development; as members of Beijing Tourism Research Center and Beijing Tourism Research Base, some actively carry out their research assigned by BTS.
　　With different academic background, they are set with different standpoints and angles to observe in research, therefore, the analyses they make are just complementary to one another, which also goes beyond their complementary precious value, but also deploys their independence and objectiveness, thus providing different needs for their readers to find what they really want to get in the book.