China's National Social Security Fund has official permission to invest overseas but is delaying doing so because of concerns over the quality of foreign markets, a top official said. 'The obstacle now is that none of the stock markets appears to be any good,' said Zhou Zhengqing, vice-director of the finance and economic committee of the National People's Congress. 'Once they find a promising market, they will jump into it quickly.' Fund chairman Xiang Haicheng told a conference in Xianghe, Hebei province, that putting the fund's money to work in overseas markets was a top priority. The fund has selected six domestic and four foreign fund managers to help it in picking stocks. Hong Kong is widely seen as the first 'foreign' destination for the fund's investments.