Director and professor of the ruins protection and ancient architecture (International) research center of Xi'an Jiaotong University; Chief planner of campus planning and construction center of Xi'an Jiaotong University; National first class Registered Architect. Xu Yu presided over the research on urban spatial integration mechanism from the perspective of cultural heritage protection of the National Nature Fund; presided over the cooperation project between Jiaotong University and Stuttgart University; co chaired and completed the research on building energy conservation and transformation technology for China sustainable project of American energy foundation; won two provincial and ministerial science and technology awards and several design awards.