--FILE-- View of the headquarters and head office the Peoples Bank of China (PBOC), Chinas central bank, in Beijing, March 22, 2008. Chinas foreign exchange reserves increased by US$74.46 billion in April to reach US$1.75 trillion. The increase, more than triple the US$24.3 billion that entered China during the period through its trade surplus and foreign direct investment, is said to be an indication of large, ongoing hot money inflows. A State Council economist earlier called for keeping the yuan stable to discourage speculative capital. However, the increase in April came during a month that saw the yuans appreciation slow. Some economists have downplayed the hot money link, attributing most of the increase in foreign Chinas foreign exchange reserves to valuation changes on non-dollar holdings.