This is in part because the Universal Postal Union considers China a developing country. https://www.wsj.com/articles/this-subsidy-for-china-is-dumb-as-a-post-

This is in part because the Universal Postal Union considers China a developing country. https://www.wsj.com/articles/this-subsidy-for-china-is-dumb-as-a-post-1517963275 https://www.wsj.com/articles/this-subsidy-for-china-is-dumb-...