Group 1 - The fourth China-Africa Economic and Trade Expo was held in Changsha, showcasing over a thousand selected African products and aiming to deepen cooperation between China and Africa [1][2] - The expo featured a new African fashion industry pavilion, highlighting the interest of African designers in entering the Chinese market, with South African designer Tola Cindy expressing hopes for greater recognition of African design in China [2] - The expo's theme was "China-Africa Cooperation in Action, Dreaming of Modernization," with over 30 trade activities focusing on various sectors including industry chain cooperation, green minerals, infrastructure, and cultural trade [4] Group 2 - A significant focus of the expo was on integrated projects that create quality employment opportunities, with several projects signed, including agricultural modernization in Tanzania and a textile project in Hunan [4] - Energy cooperation was a key highlight, with multiple solar power projects signed, including a 50MW photovoltaic project in Zambia, addressing the long-standing energy shortages in Africa [7] - A total of 176 projects were signed during the expo, amounting to $11.39 billion, representing a 45.8% increase in project numbers and a 10.6% increase in project value compared to the previous expo [7]