Original sentence: Hakuin died in Hara, the same village in which he was born and which he had transformed into a center of Zen teaching, at the age of 83.Hakuin preferred this new koan to the most commonly assigned first koan from he Chinese tradition, the Mu koan.He called it Zen sickness, and sought the advice of a Taoist cave dwelling hermit named Hakuyu, who prescribed a visualisation and breathing practice which eventually relieved his symptoms.The most important and influential teaching of Hakuin was his emphasis on, and systemization of, koan practice
Edited sentence: At the age of 83, Hakuin died in Hara, the same village in which he was born and which he had transformed into a center of Zen teaching.Hakuin preferred this new koan to the most commonly assigned first koan from the Chinese tradition, the Mu koan.He called it Zen sickness, and sought the advice of a Taoist cave dwelling hermit named Hakuyu, who prescribed a visualization and breathing practice which eventually relieved his symptoms.The most important and influential teaching of Hakuin was his emphasis on, and systematization of, koan practice