三特索道：千岛湖牧心谷项目规划有索道、滑道等，正在有序建设当中

Group 1 - The core viewpoint of the article is that the company, Santai Cableway, is actively developing its Qian Dao Lake Mu Xin Valley project, which includes cable cars and slides, and is progressing in an orderly manner [1] - The company plans to initiate sales activities for the Mu Xin Valley project once it is completed and operational, based on actual conditions [1]