Tourism city brand image construction is a strategic measure to enhance the city’s core competitiveness, and has received great attention from various tourism cities. As a new force in promoting urban development, local youth must accurately grasp their perception of the city’s brand image, to realize the simultaneous development of youth development and urban development, and the integrated development of youth, industry, and city. This paper focuses on the city brand building of tourist cities among local youth, adopts the brand association measurement tool “brand concept map”, takes Chongqing, a tourist city in China, as the field, and the local youth as the research object, and establishes the analysis perspective of the correlation strength of results based on traditional methods. Based on exploring the characteristics of brand image perception, this paper further explores the formation mechanism behind the characteristics from the perspective of the diversity of local youth’s perception channels of city brand image.

QR code transforms the way retailers offer their shopping experiences in the current context. In response, various retailers adopted innovative approaches such as QR code-based applications to attract their consumers. A QR code-based virtual supermarket refers to a space where goods or services are traded in a virtual space using a smart app-based QR code. To fully understand the opportunities of this type of supermarket applying QR-code technology, initial research is required to assess consumers’ use intention. This study has examined the antecedents of the adoption of QR code-based virtual supermarket among Vietnam consumers using the expanded Technology Acceptance Model (TAM) and explored the moderating effect of perceived risk on the relationship between attitude and consumers’ intention to use QR code-based virtual supermarket. A questionnaire was used to collect data from a sample of 335 consumers in Vietnam. The findings revealed that the antecedents are effective in predicting consumers’ attitudes and intentions toward QR code-based virtual supermarket adoption. The results showed the negative moderation effects of perceived risk for the effect of attitude on consumers intention. In addition, practical implications are supported for the application of new shopping technology and are likely to stimulate further research in the area of virtual supermarket shopping.