Asian stocks ended mixed on Monday after Chinese GDP data disappointed. China's Shanghai Composite Index closed marginally higher at 2,974.01 as the country's central bank left the medium-term lending facility rate unchanged and data showed the economy grew 4.7 percent year-on-year in the second quarter, missing expectations for a 5.1 percent increase and down from 5.3 percent in the prior quarter. Hong Kong's Hang Seng Index tumbled 1.5 percent to 18,015.94 as China's third plenum kicked off to set economic strategy for the coming decade. Seoul's Kospi edged up 0.1 percent to 2,860.92, while Australian markets rose notably, with the S&P/ASX 200 Index climbing 0.7 percent to a record high of 8,017.60. Japanese markets were closed for a public holiday.