Central banks around the world are looking at developing central bank digital currencies (CBDCs) to modernise their financial systems. Some 140 million people had opened "wallets" for China’s new digital yuan as of October and used it for transactions totalling around 62 billion yuan ($9.7billion), a senior Chinese central bank official said on Wednesday. (Sign up to our Technology newsletter, Today’s Cache, for insights on emerging themes at the intersection of technology, business and policy. Click here to subscribe for free.) However, Mu Changchun, the director-general of the digital currency institute of the People’s Bank of China, told HongKong’s "Fintech...