r and called Zheng Baorong to follow him. As they walked towards the sweet potato experimental field, Li Chen casually asked Zheng Baorong: "In your opinion, if you were to promote a new crop that peo...r.So, in this process, testing each other, easing the relationship, and building trust is the most important thing.It is obvious that Li Chen has a good start.The next day, early morning.For the first...