What jacquard, duchesse satin, faille, sable, cloque and fil coupe actually are, how many pieces use each, and how to choose a fabric by how it behaves rather than how it sounds.
Huishan Zhang publishes no country of manufacture. Here is what is actually documented about the house, and why the confident answers you will find elsewhere are inference rather than fact.
Huishan Zhang trained at Central Saint Martins and in the Dior Haute Couture atelier, founded his London house in 2012, and had a dress acquired by the V&A that same year. The full record, and what the clothes actually are.
Patou is the Paris house founded in 1914 and owned by LVMH since 2018. What it makes, and how it differs from the dog and the sneaker of the same name.