Difficulty 7 stars

985 Project: Tongji University, Southeast University, Zhejiang University and Xi Jiaotong University.

Difficulty 6 stars

985 Project: Shandong University, Northwestern Polytechnical University

2 1 1 Project: Beijing University of Technology, East China University of Science and Technology, Hefei University of Technology, Wuhan University of Technology, Nanjing University of Science and Technology.

Difficulty 5 stars

985 Project: China Ocean University

2 1 1 Project: beijing university of chemical technology, Hebei University of Technology, Donghua University, Hohai University, China University of Mining and Technology (Xuzhou), Nanchang University, Southwest Jiaotong University.

Difficulty 4 stars

2 1 1 Project: Northeast Forestry University

Other institutions: tianjin polytechnic university, Tianjin University of Science and Technology, Qingdao University, Nanjing Forestry University, Jiangsu University, Zhejiang Sci-Tech University, Chengdu University of Technology, Xi University of Architecture and Technology, Wuhan University of Technology, Xi University of Technology, Guangdong University of Technology.

Difficulty 3 stars

Other institutions: north china university of technology, Shenyang University of Aeronautics and Astronautics, Dalian Jiaotong University, Changchun University of Technology, Jilin Jianzhu University, Northeast Petroleum University, harbin university of science and technology, Qiqihar University, Hebei University of Science and Technology, Yanshan University, north china university of technology, Beihua Institute of Aeronautical Technology, Henan University of Science and Technology, Qilu University of Technology, Anhui University of Technology, Zhejiang A&F University, Hubei University of Technology, Central South University of Forestry and Technology, Shaoyang College, Wuyi University, Sichuan Light Industry.