Nyora kupfuurira kweiyi ndima - Mushure meVelvet Revolution muna 1989
, Sion akagadzwa purofesa mutevedzeri mu studio yekupenda paAcademy of Fine Arts. Akatora chikamu mumusangano pamusoro peArt Informel (1991) uye akaratidzwa pakuratidzira "Czech Art Informel: Pioneers of Abstraction 1957<unk>1964". Muna 1993 akanga retrospective kuratidzira muna Roudnice nad Labem, The Václav Špála Gallery muPrague uye Ostrava House of Art. Muna 1996 Sion akava nerimwe ratidziro muRudolfinum Gallery muPrague.