Key Asian markets ended on a mixed note, today, a day after posting their biggest single-day rise in more than two months, as investors cashed in some gains ahead of next week's key European summit on the euro-zone debt crisis. So Japan's Nikkei 225 index rose 0.5%; Hong Kong's Hang Seng moved up 0.2%; and Singapore's Straits Times index added 0.4%. But China's Shanghai Composite index slid 1.1%; and South Korea's Kospi ended marginally lower.But the European bourses posted good gains, on hopes of upbeat U.S. jobs data and a bold solution to the euro zone debt crisis at the December 9 summit. Key benchmark indices in France, Germany and UK were up by about 1.6%, each, in intra-day trade, today.