keywords: nikkei nippon japan tokyo markets
text: Nikkei Ends Up as China Data Lifts Steel  TOKYO (Reuters) - The Nikkei average closed up 0.63 percent  on Friday, led by gains in Nippon Steel Corp. and its rivals  after data showing only a minor slowdown in China's robust  economic growth eased concerns about a sudden downturn in one  of Japan's biggest export markets.