sentences:  In 2006 Billeter published "Études sur Tchouang-tseu "("Studies on Zhuangzi"), a collection of studies and articles previously published in academic journals.The Chinese translation of the "Leçons sur Tchouang-tseu "was published in Peking in 2009 and in the same year was the subject of a symposium at the Academia Sinica in Taiwan.Billeter published a critical review of this symposium in another essay, "Notes sur Tchouang-tseu et la philosophie "("Notes on Zhuangzi and Philosophy").