RobotGym is established in Shanghai to build rehabilitation and eldercare robots

Evidence notes
- RobotGym's official company history states that the company was established in June 2023.
- The company says it was founded to develop rehabilitation and eldercare robots, with embodied AI positioned around care and rehabilitation scenarios.
- This is the clearest formation event because it comes from the company's own dated history timeline.
Company context
RobotGym is the commercial brand of Shanghai Rushen Robotics, an embodied-AI company founded in 2023 for rehabilitation and eldercare.