SHANGHAI, July 25 (Reuters) - China stocks ended down for a third straight session on Monday on COVID-19 flare-ups and global recession concerns, although realty companies surged as a source told Reuters that Beijing was planning to provide them financial support.

The blue-chip CSI300 fell 0.6% to 4,212.64, while the Shanghai Composite lost 0.6% to 3,250.39 points.

The Hang Seng index fell 0.2% to 20,562.94, while the China Enterprises index lost 0.4% to 7,077.09 points.

** Mainland China reported 800 new coronavirus cases for Sunday.

** Other Asian stocks also lost ground, as worries about a global economic downturn sapped investors' risk appetite.

** "A-shares appeared relatively weak since July, following a strong rebound," said CICC in a note, adding that investors should focus on the potential upcoming July Politburo meeting.

** China will set up a real estate fund to help developers resolve a crippling debt crisis, aiming for a war chest of up to 300 billion yuan ($44.4 billion), according to a state bank official with direct knowledge of the matter.

** The Hang Seng Mainland Properties Index jumped 3.2%, and the CSI 300 Real Estate Index rose 1.9%.

** Shares in new energy firms, automobiles and communications equipment makers declined more than 2%.

** Meng Lei, China Equities Strategist at UBS Securities said the market is likely to enter a consolidation stage near term, citing broad-based second-quarter earnings downgrades, no significant fund inflows and relative low level of new mutual funds issuance.

** The Shanghai Stock Exchange (SSE) vowed to maintain market stability ahead of the politically significant 20th Party Congress later this year.

** China's transport ministry tightened existing rules governing how online ride-hailing firms should handle and share their data with regulators, signaling tighter regulatory scrutiny.

** Tech giants listed in Hong Kong dropped 1.4%, with index heavyweights Alibaba, Tencent and Meituan down between 1.7% and 2.5%.

** Meanwhile, China's securities regulator on Monday denied a Financial Times report that China was planning to sort U.S.-listed Chinese companies into groups based on the sensitivity of the data they hold, bringing them into compliance with U.S. rules. (Reporting by Shanghai Newsroom; editing by Uttaresh.V and Vinay Dwivedi)