Analysis of information sources in references of the Wikipedia article "安般守意經" in Chinese language version.
Thầy was introduced to the practice of mindful breathing and walking from a text he read while still a novice at the Báo Quốc Buddhist Institute, 1946-49. The Minor Stopping and Looking Deeply by Master Zhiyi of the Tiantai School became the basis for Thầy’s practice of mindfulness of breathing (he already learnt mindfulness as an aspirant and novice at Từ Hiếu). Thầy applied this practice of awareness of the breath and steps to heal himself from his serious illness in the late 1950s. He realized that counting his steps and combining his steps with his breathing was an effective way to stay relaxed and focused, and not think about anything else. Later, while teaching at the École Pratique des Hautes Études of the Sorbonne in Paris in the early 1970s, Thầy had access to libraries with many rare documents concerning Vietnamese Buddhism. He discovered the Preface to the Anapananusmrti Sutra by Master Tăng Hội and this led him to look deeper into the sutras on mindful breathing in the Pali and Chinese canons.
