This study explores China's future development and relations with the United States towards the year 2050. The following six dimensions are analyzed: demography, economy, politics, foreign policy, military and technology. The study outlines a basic scenario, based on the current development continuing without major disruptive changes. According to the scenario, China, led by the Communist Party, will continue to develop its economic, military and technological capabilities and will be the world's largest economy by 2050. At the same time, declining population and inability to implement necessary reforms have caused economic development to stall and China has not become the dominant world power. China has strengthened relations with Russia and the global south, in particular with other authoritarian states, but ties with the West have weakened. Relations with the United States are dominated by fundamental contradictions. The military rearmament in the region, especially around Taiwan, has continued and the risk of armed conflict has increased. By 2050 the Chinese military is more modern consisting of intelligent and more developed capabilities. Thus, China can assert its interests and challenge American forces in the near region. The study has identified the following seven disruptive changes that could overturn the scenario: A deep economic crisis, an economic breakthrough, succession crisis after the death of Xi Jinping, invasion of Taiwan, an isolationist US, technological breakthrough in China and a major natural disaster.