Group 1 - The completion of the Suichuan to Dayu Expressway, costing 24.45 billion yuan and spanning 127 kilometers, significantly reduces travel time from Ganzhou to the Guangdong-Hong Kong-Macao Greater Bay Area to 4 hours, enhancing personnel movement and trade flow [1][4] - The density of expressways between Guangdong and Jiangxi provinces is the highest in the country, with an average of one expressway every 50 kilometers, facilitating cross-regional collaboration and economic integration [3][4] - The "Bay Area R&D + Jiangxi Manufacturing" development model is gaining momentum, with major companies like Gree and BYD establishing operations along the expressway corridor, while Jiangxi enterprises are setting up R&D centers in Guangdong [1][6] Group 2 - The collaboration between Guangdong and Jiangxi is part of a broader trend where provinces like Guangxi, Hunan, and Guizhou are accelerating their integration with the Greater Bay Area, leveraging improved transportation networks for resource flow and industrial cooperation [2][8] - The establishment of a high-speed rail network, including the Ganshen High-Speed Railway, has integrated the Jiangxi region into the "2-hour economic circle" of the Greater Bay Area, enhancing economic connectivity [4][5] - Jiangxi's agricultural products, such as Gan Nan navel oranges and high mountain tea, benefit from improved logistics, achieving a 30% reduction in transportation costs and enabling rapid supply to the Greater Bay Area [6][7] Group 3 - The electronic information industry in Jiangxi is experiencing rapid growth, with a projected output nearing 1.2 trillion yuan in 2024, supported by deep collaboration with the Greater Bay Area, particularly in sourcing materials and equipment [7] - Companies from the Greater Bay Area are increasingly investing in Jiangxi, with over 140 industrial projects exceeding 100 million yuan in investment, indicating a strong industrial partnership [7][8] - The trend of "R&D/market in the Bay Area, production in other provinces" is emerging, expanding the industrial complementarity between the Greater Bay Area and surrounding provinces [8]