The Lotus Sūtra (Sanskrit: Saddharma Puṇḍarīka Sūtra, literally Sutra on the White Lotus of the Sublime Dharma) is one of the most popular and influential Mahayana sutras, and the basis on which the Tiantai, Tendai, Cheontae, and Nichiren schools of Buddhism were established. For many East Asian Buddhists, the Lotus Sūtra contains the ultimate and complete teaching of the Buddha and the recitation of the text is understood to bring auspicious fortune and eradicate ones accumulated negative karma. The Lotus Sutra has been called "perhaps the most famous of Buddhist historical texts" and the "most important sutra". It has also been called "the most widely read and most revered scripture in East Asia since its translation in the 3rd century" and the "king of the scriptures".

The Chapter 25 of the Lotus Sutra is "The Bodhisattva Avalokiteśvara" (The Universal Door of Guanshiyin Bodhisattva) - This chapter is devoted to Avalokiteśvara, describing him as a compassionate bodhisattva who hears the cries of sentient beings, and rescues those who call upon his name.