Chan Master Huangbo Xiyun was a highly influential Chinese Chan (Zen) master during the Tang Dynasty, known for his profound teachings and contributions to the development of Chan Buddhism.
Master Zhaozhou Congshen was a highly influential Chinese Chan Buddhist master of the Tang Dynasty. A key disciple of Master Nanquan Puyuan, he is celebrated for his profound yet unconventional wisdom expressed through paradoxical actions and dialogues (koans).