大湾区包括哪些地方，经济有什么特点？

Group 1 - The Greater Bay Area (GBA) refers to the Guangdong-Hong Kong-Macau Greater Bay Area, which includes Hong Kong, Macau, and nine cities in Guangdong Province, covering a total area of 56,000 square kilometers and a population exceeding 80 million [2][10] - The GBA is one of the most open and economically vibrant regions in China, characterized by its strong international economic connections, particularly through Hong Kong as a global financial hub and Macau as a tourism center [5][4] - The region's economy is marked by four key characteristics: strong ties to the global economy, industrial diversification, robust innovation capabilities, and significant collaborative development advantages among cities [5][7][8] Group 2 - The GBA's industrial landscape is diverse, encompassing finance, technology, manufacturing, and services, with notable contributions from major companies like Huawei and Tencent in the tech sector [7][4] - The area boasts a strong innovation ecosystem, supported by numerous universities and government policies that encourage research and development, with R&D investment in Shenzhen consistently above 4% of GDP [7][8] - Collaborative development is a significant advantage, with Hong Kong and Macau providing international services and funding, while mainland cities offer market access and industrial support [8][10]