MO Zhi-wen (莫智文) was born in Chongqing. China, in 1963. He received the Ph.D. degree from Southwest Jiaotong University in 2005. He is now a professor with Sichuan Normal University. His research interests include automata theory and fuzzy (rough) set theory. HU Hong-li (胡红莉) was born in Sichuan, China, in 1978. She is currently pursuing the Ph.D. degree with Sichuan University. Her research interests include fuzzy automata.