head back.Liu, the head of the bodyguard unit, was uneasy. He feared that someone might follow the tracks to the mountain stream. So he discussed it with Li Laosi.He would have Jia Yi and Liu Yang sta...er you bring back two high-yield crops that rival corn and potatoes, I will bestow upon you the title of Duke. What do you say"Dingbei Hou wilted immediately.Let's not talk about whether high-yield fo...