A PRPCT to Assess the Efficacy & Safety of Chronic Pain Rehab Training Software for Alleviating Chronic Secondary Musculoskeletal Pain

"The intervention is a single 15 min MR therapy. The MR therapy is consisted of MR device and software. The model of MR device used is Pico Neo 3 Pro. The software run on the MR device delivers two types of contents: 1) A 7min of computer-generated 360 video of underwater scene with therapeutic music to distract patients' attention on pain and make patients passively relax. 2) An 8min guided relaxation in which patients are transported to seaside with narrative to achieve image and breathing relaxation.~And the placebo-group used the same non-mixed reality(Non-MR) scenario to treat patients, although the scenario is completely identical, it is not presented in a mixed reality scenario. It only presents the scene in normal display mode."