Xu (PhD, Xi’an Jiaotong U., 1988) is Dist. Prof. at Hangzhou Dianzi U. since 2015, prior to which he was Chair Prof. at Natl. Sun Yat-sen U. (NSYSU) and served as Head, Appl. Math. Dept. (2010-13) and Dean, College of Sci. (2014-15). He was postdctl. fellow, Dalhousie U., lecturer and assoc. prof., East China U. of Sci. and Tech., vis. prof., U. of Sevilla, assoc., full and snr. prof., U. of KwaZulu-Natal (UKZN). His awards include: ISI classic citation award; UKZN res. distinction award; South African Math. Soc. res. distinction award; Min. of Education of China second award (joint) in natrl. scs.; NSYSU citation award. He is serving editorial boards of +20 intl. math. journals. He was elected to Acad. of Science of South Africa in 2005 and to TWAS in 2012. He was listed Thomson Reuters' "Highly Cited Researcher" and selected as Zhejiang Provincial "Thousands Talents" both in 2014.