There may be the following reasons for the decline in sales of duck feet with 18 hands:

1. Epidemic impact: The global outbreak of the epidemic has had a far-reaching impact on all walks of life, among which the catering industry has been greatly impacted. For the sake of epidemic prevention and hygiene, people reduced the frequency of eating out and chose to cook at home, which made the sales of many catering brands, including Jianglong Eighteen Palm Duck Claws, decline.

2. Market competition: The competition in Chengdu duck claw market is fierce, and duck claw products of various brands and tastes emerge one after another, so consumers have more choices. In this case, even if the duck claw with 18 palms on the dragon has a unique taste and brand image, the sales volume may decline due to the intensification of market competition.

3. Insufficient product innovation: If a product lacks innovation and changes for a period of time, consumers may choose other brands or products because of the lack of freshness. Although some achievements have been made in the market, if there is no breakthrough in product innovation, consumers' loyalty to the brand may decline, thus affecting sales.

4. Improper marketing strategy: The marketing strategy of an enterprise also has a great influence on product sales. If the marketing strategy is inappropriate or poorly implemented, it may lead to the decline in the popularity and recognition of products in the market, thus affecting sales.

5. quality problem: if there is a problem with the quality of the product, it may affect consumers' trust and satisfaction with the product, thus leading to a decline in sales.

it should be noted that the above are only some possible reasons, and the specific reasons may need further understanding and analysis based on market research and field visits.