How does lin see the different motives of chinese and europeans in conducting trade activities?

Lin sees the Chinese as exhibiting many quality items that are of really important for other countries who import it. They identify the imported goods as low quality “playthings”, which could just be "easily dispensed without causing any ill effect”. They also see that the English motive for trade, specifically for the opium trade, to be focusing more on profit and not on the mutual benefits of all parties. He also believes that the “products that come from China are useful, the food are good and are very easy to sell”.

What research did you learn from?