Sujing was permitted to be a Ph.D candidate. New master students Su Ruiyuan, Zhou Wanfang, Yan Lihua, Wu Yanxiong joined to our group. Welcome.

• 苏静提前攻读博士学位,欢迎新的硕士生苏瑞渊、邹万芳、闫立华、伍雁雄加入我们的队伍。