Hong Kong has the “most complete renminbi financial ecosystem” and is well placed to serve as a hub for Central Asian countries seeking to expand the currency’s use in trade and investment, according to a veteran banker. Stephen Chan Man, deputy chief executive of Bank of China (Hong Kong), also said on Thursday that the high-level delegation led by Chief Executive John Lee Ka-chiu next month to Kazakhstan and Uzbekistan was an opportunity to deepen financial ties with the region under a...