国产乱妇一级a视频,欧美亚洲国产激情一区二区,国产精品片免费看,国产精品xxxx国产喷水

　　On September 15, 2018, a total of more than 60 alumni who graduated 20 or 30 years ago returned to their alma mater on the occasion of the 78th anniversary of Beijing Institute of Technology, and reminisced about the campus life. The School of Management and Economics held a warm welcome for the alumni to go home. Dean Wei Yiming, Party secretary Wang Zhaohua and other school leaders attended the meeting. The welcome party was hosted by Guan Hong, the deputy dean of the administration.