Hanging scroll, ink and colour on paper, inscribed and titled Pushu tu (Airing the Books) at upper right, dedicated to Taijun and Josef Hejzlar, signed Huang Yongyu, with two seals of the artist. Dated summer of the dingmao year (1987), Beijing., Provenance: Acquired directly from the artist by Josef Hejzlar (1927–2012), the eminent Czech sinologist, art historian and translator, author of the celebrated monograph on Qi Baishi (1970, awarded the Odeon Publishing House Prize); Beijing, summer 1987; thence by descent in the Hejzlar family.