The Logic Behind Louis Vuitton’s Hong Kong Show

November in southern China is shaping up to be a tale of two cities.

At the start of the month, fashion insiders gathered in Shenzhen for the re-staging of Chanel’s latest cruise show. On Nov. 30, they’ll gather again for Louis Vuitton, this time in Hong Kong — across the border in China’s special administrative region but just 15 minutes away by high-speed rail — to see Pharrell unveil his second menswear collection for the house on…