In 1934, when Lenthéric, one of the most successful perfume makers in pre-second world war France, decided to modernise its blockbuster scent, Heart of Paris, it began by modifying the formula, adding aldehyde chemical compounds similar to those that had made Chanel N°5 stand out. The scent was then repackaged in an archaic Chinese-bronze-style bottle and renamed Shanghai. Advertisements for the modernised perfume emphasised the Chinese metropolis' mix of ancestral tradition and cutting-edge modernity.