HONG KONG/SHANGHAI (Reuters) -Disillusioned with a weak stock market at home, geopolitical risks and a falling currency, Chinese investors are pouring money into investment products with exposure to overseas assets that will also help diversify their portfolios. Retail money has gushed into exchange traded funds (ETFs) and mutual funds issued under the Qualified Domestic Institutional Investor (QDII) programme, one of the few channels for Chinese money to be invested abroad, leaving managers of these funds scrambling for more quotas under the strictly managed scheme. Those investing in QDII ...