Investing.com - The yen gained further in Asia on Monday, led by safe-haven buying as investors braced for a week of exams policies of central banks and urns studied for a possible split UK EU and studied data from China, which pointed to strong retail sales. USD / JPY changed hands at 106.08, down 0.86%, while EUR / USD was trading at 1.1242, down 0.09%. GBP / USD held at 1.4186, down 0.48%. In China, investment in fixed assets rose 9.6% in May, below the expected 10.5% increase year after year. In turn, industrial production seen May gained 6.0%, slightly better than the 5.9% seen year after year and retail sales increased by 10%, but still below the 10.1% yoy expected. Markets in Australia are closed for a holiday. The US dollar index, which measures the strength of the greenback against a trade-weighted basket of six major currencies, rose 0.14% to 94.76. Investors will focus to monetary policy announcement Wednesday by the Fed for clues about the future direction of interest rates in the US, as well as the monetary policy meetings in Japan, Switzerland and the United Kingdom Also ahead, Britain's June 23 referendum on whether to remain in the European Union will weigh on the pound and the euro. Last week, the dollar ended the week sharply higher against other major currencies on Friday despite lower expectations of a summer rate hike by the Federal Reserve. Markets have pushed back expectations on the timing of the next rate hike by the US central bank after the dismal May jobs report, which he showed the economy created only 38,000 jobs last month, the smallest increase since September 2010. (NASDAQ: CME) CME Group tool clock Fed said Friday that the possibility of a 1.9% FOMC will raise rates in June. The probability of at least one rate hike in 2016 stood at 58.8%. A speech by Fed Chairman Janet Yellen said on Monday that interest rates will not rise until the uncertainty about the economic outlook is resolved. Yellen said he expects economic recovery to continue, but gave no indication of the date of an upcoming rate increase. The Fed raised interest rates for the first time in nearly a decade in December.