Whether a self-funded book could sold well depended on the quality of the novel and the market demand. If the novel itself was an excellent work, then it had great potential to sold well. In addition, market demand was also an important factor. If the novel met the readers 'tastes, it was likely to sold well. If he wrote it well, it was more likely to sold well. By publishing a book at his own expense, he could better display his work and let more people understand it. In addition, they could also get more feedback and suggestions to improve their works. However, there were also some risks in self-publishing books, such as the publishing house or the publishing company not recognizing their own works or the lack of market demand, resulting in their books not being able to sold well. Therefore, before deciding to publish a book at their own expense, they had to seriously consider the quality of their work and market demand, and do sufficient market research.