great contributions. However, the promotion of sweet potatoes still needs manpower at the moment. They are the first batch of people with real planting experience, so I can't immediately let them go...Chapter 1556: Negotiation them clashed like wild bulls.Li Chen seeing this, a slightly bored expression appeared on his face.It seems to him that it's all just a trivial farce.Nodding slightly to Xu Wei, Li Chen said in a coo...