Group 1 - The core point of the article is that Rock Mountain Technology (002195.SZ) announced its full subsidiary Hainan Ruihong's investment in a private equity fund focused on the integrated circuit industry, with a total subscription amount of RMB 400 million [1] - Hainan Ruihong, as a limited partner, has committed RMB 30 million, representing 7.50% of the total subscription amount [1] - The partnership aims to achieve capital appreciation through equity investments and related activities within the integrated circuit sector [1]