Introduction to Changyi Green Expo: Changyi Green Expo is located on the east bank of the Wei River. It is the core area for the development of Changyi's seedling industry. It is also the venue for the previous "Northern China Greening Seedlings Expo", the North China Greening Seedlings Base, National Agricultural Tourism Demonstration Site, Shandong Province Cultural Industry Demonstration Base, National Leisure Agriculture and Rural Tourism Demonstration Site, Shandong Province Environmental Education Base, etc.