Systematically introducing the morphology, distribution and habitats of the medicinal plants in Northeast China, the book series also contains the names, taste and functions of such plants, among other information. Over 5,000 prescriptions are also part of the book series.

The books have been recommended by the Chinese Academy of Sciences academician Sun Handong and academicians of the Chinese Academy of Engineering Zhang Boli and Xiao Peigen.

Sun says the series has important reference value for experts who study medicinal plants in Northeast China and it provides firsthand information for the development, utilization and protection for the plants in the region.

Zhou, who retired this year, is working on his future plan－to visit other parts of the country in the next 15 years and complete a book on wild plants that may have an economic benefit.