Dr. Ruijian Li is a Postdoc of Shandong University and Harvard Medical School. He is major in the diagnosis and treatment of high-risk chest pain, especially PCI of severe cardiovascular diseases with the aid of mechanical devices (IABP and ECMO, etc.). He could independently perform complex high-risk CHD cases (such as patients with left main diseases, calcification, chronic total occlusion/CTO, etc.). 2017.7-2018.7 he has studied in Harvard Medical School and Cleveland Clinic with the support of Shandong Governmental Funding. He also hosted and completed 3 provincial-level grants and 1 national-level grant. As the first author and/or corresponding author he has published more than 20 papers in medical journals, including 6 SCIE papers.