What if China stops being an optimal currency area? ByMatthew C KleinPRO INVESTOR Updated: 17 January 2018 DisclosureWe sometimes use affiliate links in our content, when clicking on those we might receive a commission – at no extra cost to you. By using this website you agree to our terms and conditions and privacy policy. Join Our Telegram channel to stay up to date on breaking news coverage The single market works best with full freedom of movement. Continue reading: What if China stops being an optimal currency area? Join Our Telegram channel to stay up to date on breaking news coverage