Does the subject want to ask: "The 827 circuit is only available in Tsinghua?" ? Circuit No.827 is a postgraduate course introduced from Tsinghua University. It is offered in Xi Jiaotong University, Huazhong University of Science and Technology, Zhejiang University, Shanghai Jiaotong University, Harbin Institute of Technology, North China Electric Power University, Tianjin University, Southwest Jiaotong University and Shandong University.