The book has six chapters. The first one introduces the history of Avalokiteśvara Bodhisattva in Vietnam, China, and Korea following the tradition of Mahāyāna Buddhism. It has many simple-to-understand stories, but when proceeding to the second, third, fourth, and fifth chapters, readers have to use their intellect to explore them, because the author has incorporated the penetrating hearing method of Avalokiteśvara to form this...