Ts’ai Yin ［蔡愔］ (n.d.) (PY Cai Yin;  Saiin): An official who served Emperor Ming (r. 57–75), the second emperor of the Later Han dynasty in China. Dispatched by Emperor Ming to India to seek out the Buddha’s teachings, he brought Buddhism to China. Tradition regards this as the first introduction of Buddhism to China. According to The Liang Dynasty Biographies of Eminent Priests, Emperor Ming dreamed of a golden man levitating. He asked his ministers and other officials about the dream. One of them said that he had once heard of a god called Buddha, and that the golden man in the emperor’s dream must be this Buddha. The emperor sent Ts’ai Yin and the others to India to obtain the Buddha’s teachings. At the request of Ts’ai Yin, two Indian Buddhist monks, Kāshyapa Mātanga and Chu Fa-lan (Sanskrit name unknown), came to Lo-yang in China with Buddhist scriptures and images. One account describes the year of this introduction of Buddhism as 67.