** Shares of technology software and information technology services group Chinasoft International 0354.HK jump 6.2% to HK$4.77

** Stock set for the biggest one-day pct gain since March 6

** Stock on track for third consecutive session of rise

** Chinasoft and its associate Shen Kaihong Digital jointly launch China's first OpenHarmony-based robotic operating system M-Robots OS

** OpenHarmony is an open-source version of the operating system launched by smartphone-maker Huawei

** Characterized by multi-machine collaboration and swarm intelligence, M-Robots OS offers a "China Solution" for the global robotics industry, says Chinasoft

** Hang Seng Tech Index .HSTECH surges 3.4%, Hang Seng Index .HSI rises 2.7%

** Stock down 10.8% YTD

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))