<p>(top-bottom) One-hundred Yuan, $100 and 10,000 Yen notes are seen at the Korea Exchange Bank in Seoul <p><p><p>China and Japan will begin work this month to promote the direct exchange of their currencies as trade between their two countries grows, the Nikkei newspaper reported on Friday.</b></p><p>The bulk of trade between the world's second-largest and third-largest economies is currently settled in dollars, due in large part to financial regulations and market custom.</p></p><b>(Pictures by Reuters)</b></p>