The south started reform and opening up early, with many coastal areas, humid climate and abundant rainfall, which is very suitable for production, but the north is different. The climate is dry and cold, and there is not much rain, mainly because the transportation is not convenient enough. You think, if the finished product can't be shipped, it will be a loss. There are also many heavy industries in the north. You are like northern Shaanxi and northeast China. Now everyone is drifting north. There are many development opportunities in the north. It's about starting your own business.