Group 1 - The core viewpoint is that cities like Wuxi are shifting their investment attraction strategies westward, seeking new industrial cooperation opportunities in central and western cities like Xi'an and Luoyang, which marks a departure from traditional coastal-focused approaches [1][2] - Wuxi's westward strategy is driven by its ambition to develop future industries, particularly in commercial rockets, satellite manufacturing, and space information applications, necessitating talent and resources from western regions [1][3] - The collaboration model between Wuxi and Xi'an involves R&D incubation in Xi'an and industrial implementation in Wuxi, highlighting the complementary resources between the two regions [1][3] Group 2 - The trend of cities engaging in mutual investment attraction reflects both competition and opportunities for resource complementarity and industrial synergy, as articulated in the "sweet potato economy" theory [3][4] - The shift from traditional "west to east" investment strategies to "east to west" is based on the principle of seeking high-growth startups and technology-driven companies that align with regional industrial needs [3][4] - Concerns about potential "talent siphoning" risks from westward investment strategies are countered by the notion that regions should focus on creating a nurturing environment for their own industries to thrive [4]