That may be true historically, but today's Guangdong, wrapping around Hong Kong, home to Shenzhen and a vast number of exporters, is twice as rich as landlocked

That may be true historically, but today's Guangdong, wrapping around Hong Kong, home to Shenzhen and a vast number of exporters, is twice as rich as landlocked Sichuan: https://en.wikipedia.org/wiki/List_of_Chinese_administrative_divisions_by_GDP_per_capita https://en.wikipedia.org/wiki/List_of_Chinese_administrative...