Yáo Xìng 姚興 (r. 394–416), styled Zǐlüè 子略, posthumously Wénhuán dì 文桓帝, second ruler of the Later Qín 後秦 state founded by his father Yáo Cháng 姚萇 at Cháng’ān. A devout patron of Buddhism, he summoned 鳩摩羅什 Kumārajīva from Liángzhōu to Cháng’ān (401) and underwrote the great Yáo-Qín translation enterprise, also supporting 佛陀耶舍 Buddhayaśas and 竺佛念 Zhú Fóniàn in the production of the Sìfēn lǜ 四分律 (KR6k0009) and the Cháng Āhán jīng 長阿含經 (KR6a0001). His patronage made Cháng’ān the principal centre of Buddhist translation in late-fourth- and early-fifth-century China.