He tells us that he was taught mathematics by Liu I who was a native of Chung-shan, in Kwangtung province, which is south of Chekiang province where Yang Hui was born.
Siya ay nagsasabi na siya ay tinuturuan sa pamamagitan ng matematika Liu ko na ay isang katutubo ng Chung-Shan, Kwangtung sa probinsya, na kung saan ay ang timog ng Chekiang probinsya kung saan Yang Hui ay ipinanganak.