(From left) Dongming Wang, Wen-tsün Wu, Heisuke Hironaka, Testuo Ida, Masahiko Sato
in the conference room of the New Main Building at Beihang University
Heisuke Hironaka, Fields Medal Prize Winner, at Beihang University,
delivering an invited talk
Arjeh Cohen at Beihang University, delivering an invited talk
Testuo Ida at Beihang University, chairing an international conference
