Some said that Lü Jian was a writer, he said he was not, and that he was just an amateur, and leisure time should be filled. Some said that Lü Jian was an economist, he said he was not, and that he was merely someone who liked economics, because one must know about economics in life; some said that Lü Jian was a channel marketing expert, he said he was not, and that he was just a marketing clerk, studying marketing in order to support his family and live a better life!