that local farmers had obtained some strange plant seeds and diagrams from Westerners in exchange for ceramics and silk, including something called sweet potatoes.""I heard from my father that this t...d long strides, Zhao Heshan walked towards them, drawing everyone's attention.With a sweep of his gaze, Zhao Heshan came to the front of Zhao Xuanji and Li Yinhǔ, bowing and saying: "My humble self, Z...