OVERVIEWIn the 21st century,scientific research is becoming more and more interdisciplinary.New discoveries are often made at the boundaries of different disciplines.Biology is entering a new era in which quantitative measurements and mathematical modeling play increasingly important roles in understanding and predicting biological behavior.Facing this challenge and opportunity,the Center for Quantitative Biology (CQB,formally the Center for Theoretical Biology) was established in 2001,with the support of the Nobel Laureate Prof.T.D.Lee and the leadership of Peking University.As part of PKUs strategic initiative in enhancing interdisciplinary research,CQB is dedicated to research and education at the interface between the traditional more quantitative disciplines (such as mathematics,physical sciences,engineering,computer science) and the biological sciences.CQB has a proficient teaching and research team,comprising of prominent members with outstanding achievements in various fields of physics,chemistry,life sciences,biotechnology and mathematics.Up to 2015,CQB has 16 principal investigators,including one member of the Chinese Academy of Sciences,one recipient of the "Thousand Talent Plan",two "Cheung Kong Scholar" Chair Professors,three "Cheung Kong Scholar" Visiting Professors and three recipients of the "Thousand Young Talent Plan".More than 50 graduate students and 4 postdoctoral fellows are currently enrolled in CQB.