When British actor Tom Holland and his actress wife Zendaya arrived in Shanghai late last month to promote Spider-Man: Brand New Day, the celebrity couple’s sightseeing excursions and shopping expeditions grabbed even more headlines than the blockbuster itself.From dining at a local noodle shop to wearing affordable Chinese apparel brands, the A-list pair spent a day exploring the city, reigniting online buzz in China over the growing trend of foreign tourists visiting and spending in the...