Prof. GUO Weiling graduated as a bachelor in Semiconductor Devices and Physics from Tianjin University in 1988, and received Master and PhD from Beijing University of Technology in 1993 and 2003 respectively. During 1998 and 2001, she was invited to Electronic Engineering DeThe University of Hong Kong to research on semiconductor optoelectronic devices. She played a key role in over 20 projects funded by various funds including Natural Science Foundation of China, 863, 973, State Education Commission, Natural Science Foundation of Beijing, Beijing Municipal Education Commission, etc.; was in charged for 4 projects; was granted 4 national and provincial awards; has published over 60 papers. Currently her main research focus includes Semiconductor optoelectronic devices especially research on LED and LD devices, reliability analysis and research on optoelectronic application technology.