Skilled technique or enough time (more than one month) is regarded as necessary conditions to complete a handicraft
Xiao Zhou only took 25 days to complete a handicraft, which shows that Xiao Zhou has mastered skill
For a product to sell well in the market, high quality and sufficient advertising are indispensable. There is an electric fan, and experts say that it is of high quality, but the sales are not good, indicating that its advertising is not enough.