 Shortly after Asaṅga, Vasubandhu (c. 5th century ce), another Buddhist idealist, thought to be the younger brother of the Asaṅga, wrote at least three works on debate: Vāda-hṛdaya (Heart of debate), Vāda-vidhāna (Precepts of debate) and Vāda-vidhi (Rules of debate). These texts have been lost, though fragments of the latter two, some in Sanskrit, many in Tibetan, have been collected (Frauwallner 1933, 1957; Ono 2020). Another work, ascribed to Vasubandhu, which survives only in Chinese, is the Rúshí lùn (如實論), Treatise on truth. G. Tucci (1929), translating it back into Sanskrit, gave it the Sanskrit title Tarka-śāstra, by which it is now generally known. However, as has been shown recently by Ono Motoi (Ono 2020 §1), this rendition is not correct.