Research on Tibetan Buddhist texts is still just beginning here in Taiwan. We have a great need of more teaching materials to assist in language acquisition and increasing familiarity with Tibetan Buddhist texts. In view of this, the Chinese translation of Tibetan version《唯識二十論釋疏》which is dealt with in this research appears.
Indian scholar Viniitadeva's (調伏天)《唯識二十論釋疏》is a commentary of both《唯識二十論》and《唯識二十論釋》of Vasubandhu (世親). It preserves the spirit of Vasubandhu's works. None of the tenet theory hue of Viniitadeva is added into this commentary. It just truthfully annotates word for word. Therefore，it is an excellent text for those who wish to realize the thought of Mind-only of Vasubandhu and have a mind to learn Tibetan Buddhist works, which is why I have chosen it for compiling teaching material and researching thought. I hope that through researching on this work，practical teaching material suited to local needs may be developed.
With regard to the thought of Mind-only，which is based on the doctrine of "All of the Three Realms are Mind-only" (三界所有，唯是一心) within《華嚴經 十地品》，what messages it will send? It intends to elucidate "all of outer circumstances are products of inner consciousness (including minds and mental factors)." Apart from consciousness, there are no real external circumstances. However，most of the sentient beings, who have been obscured by ignorance from time without beginning，don't know this. So，they always mistake "the products of inner consciousness" for "real external circumstances which exist outside of inner consciousness." And then they cling to all sorts of wrong ideas, which create karma and lead to suffering in the future.