Japan’s central bank governor called on Beijing to impose more stringent capital controls to help stem massive outflows of hot money from China and stabilise its currency as the World Economic Forum in Davos wrapped up on Saturday.

World economic leaders remain far more optimistic about the health of the global economy than turbulent financial markets have suggested in 2016 and Haruhiko Kuroda’s suggestion of temporary controls to help restore confidence was not rejected by Christine Lagarde, managing director of the International Monetary Fund.

Controls on capital outflows from China would come at the cost of reversing the ease of use of the renminbi, but would reduce the relentless downward pressure on the Chinese currency, which has contributed to fears that China is about to seek a return to export-led growth as its domestic economy slows.