The group meeting of Week 14 of Magic Lab was successfully held in Room 436, Tongda Building, Tongji University at 18:00 on December 14, 2020, which was carried out concurrently through online platform. Jinjue Li gave a report on the topic of “Learning and Optimization for Mixed Autonomy Systems - A Mobility Context”. Participants in this report included Professor Wanjing Ma, Professor Kun An, Assistant Professor Ling Wang, Assistant researcher Chunhui Yu, Research Assistant Bei Chen, and other members of MAGIC Lab.