Master Hsu Yun, the Venerable teacher of Master Hsuan Hua, was enlightened in a famous episode at Gao Min Monastery in Jiangsu. After nearly dying from falling into a river on his way to a China Session, Master Hsu Yun heard a tea cup hit the floor and shatter. The sound woke him up to the source of his Buddha nature and his own mind. All his doubts fell away and his mind was luminous and boundless.
We visited Gao Min Monastery and toured its nine-story pagoda, the Chan Hall where Master Hsu Yun woke up (it's now the main dining hall) and a nearby convent where the sharira/relics of Ven. Master Lai Guo are preserved.I will post photos separately.