Open this photo in gallery: TikTok videos such as these have multiplied in the wake of U.S. President Donald Trump’s 145-per-cent tariffs on Chinese goods, with creators claiming to work with factories behind major brands such as Lululemon, Nike and Dior.Supplied Standing outside what appears to be a shopping centre in the Chinese city of Yiwu, a woman eagerly tells TikTok viewers that the same factory making a pair of $100 Lululemon leggings can sell them directly to customers for just $5 to $6. “The material and craftsmanship are basically the same because they’re from the same production line,” says…