Start from multiple angles: 1. Horizontal conception: that is, in the process of thinking, thinking follows the direction that raw materials tell readers. Whatever we do, we can't be divorced from reality. The advantage of this idea is that it can closely follow the basic tendency and main points of the material, so there will be no digression and digression. 2. Reverse conception: that is, reverse thinking about raw materials, and clearly questioning raw materials from a negative perspective. Because the more people wear hair barefoot, there will be a big market for shoes and hats, and it will be concluded that Lu people may not be poor. This requires Lu people to dare to try, take risks and reform. 3. Extension conception: On the basis of the known content of raw materials, make reasonable association with raw materials, and make appropriate reasoning and extension. "You can't do business at a loss", "How can you get rich if you have no place to use it" and so on. 4. The idea of analogy: through association, the known content of the material is linked with other contents other than the material to find out the similarities.