Zhengxiong Luo, University of Chinese Academy of Sciences (UCAS) Dayou Chen, Alibaba Group Yingya Zhang, Alibaba Group Yan Huang, Center for Research on Intelligent Perception and Computing (CRIPAC) Liang Wang, Center for Research on Intelligent Perception and Computing (CRIPAC) Yujun Shen, Ant Group Deli Zhao, Alibaba Group Jingren Zhou, Alibaba Group Tieniu Tan, Center for Research on Intelligent Perception and Computing (CRIPAC)