The integrated circuit (IC) industry is the foundation of the information industry, and its level of development is an important manifestation of the economic and technological strength of a country. At present, the IC industry is primarily monopolised by developed countries. Although China is the world’s largest consumer of semiconductors, it has a disproportionately small international market share of production and a very low domestic chip self-sufficiency rate, lagging far behind Europe, the United States, Japan, and South Korea. The process of promoting the development of China’s IC industry ecosystem is discussed based on a case study of Tsinghua Unigroup and the observation and analysis of its recent international mergers and acquisitions. The resulting conclusions suggest valuable mechanisms that could benefit the technological improvement of late-developing countries and help them close the gap with more developed countries. Relevant theory for the industrial ecosystem is enriched, providing a useful reference for the development of the IC industry in late-developing countries.