Biograpies: XIAO Bing(1960-), male, native of Urumgi, Xinjiang, a lecturer of Xinjiang Normal University, M.S.D., engages in complex analysis and its applications; WU Qi-feng(corresponding author)(1963-), male, native of Shaoguan, Guangdong, an associate professor of Shaoguan University, M.S.D., engages in complex analysis and statistics; YUAN Wen-jun(1957-), male, native of Anyue, Sichuan, a professor of Guangzhou University, Ph.D., engages in complex analysis and its applications.