This document provides scheduling information for a class called Y1-SCI-B1 taught by Chengcheng Li on Tuesdays from 11:00-11:50 and 12:00-12:50 and Fridays from 9:00-9:50 and 10:00-10:50. It also lists Chengcheng Li's contact information and office location as Chengcheng.li@xjtlu.edu.cn and B1-503.