➀ Huawei has launched the Mate XT, its first tri-fold smartphone after 5 years of research and development; ➁ The phone has already attracted nearly 7 million pre-orders, with an initial stock of 500,000 units; ➂ The cost of the tri-fold screen is high, with Huawei planning to improve efficiency and reduce costs; ➃ Huawei has adopted the 'Tiangong Hinge System' for its thin and stable design; ➄ The camera module is supplied by several major companies, with Huawei also introducing its in-house CMOS sensor for the first time.