A classic sourcebook of Chan Buddhist Koans and commentaries, composed by famous masters of the Cao Dong school of Chan. Volume one contains the first fifty cases.Linquan Conglun 林泉從倫 (n.d.) was a dharma heir of Wansong Xingxiu 萬松行秀 (1166–1246), the master at the temple Bao'en si 寶恩寺 in Yanjing 燕京 (present-day Beijing), and served as Wansong's successor at Bao'en si upon the latter's death. In 1268 he was invited to the court to lecture on Buddhism. A famous leader of the Caodong school, Linquan was the compiler of the koan commentaries Konggu ji 空谷集 (Empty valley anthology) and Xutang ji 虛堂集 (Empty hall anthology).