Sutra literature consists of short but meaningful sentences that are well connected to each other. These often include terminology and technical terms so that even the most profound things can be said briefly but clearly. In ancient times, the importance of Sutra literature was that most of the texts were composed for the purpose of memorization; Therefore, it was particularly useful to be concise. Since the sutras were very brief, sometimes it was difficult to understand their meaning. As a solution to this, the practice of commenting on many sutras became prevalent.
