When did Yunnan's big infrastructure era begin to develop?

The 20th century. According to relevant data, the era of large-scale capital construction in Yunnan can be traced back to the 1990s, especially since the 20th century. During this period, Yunnan Province accelerated the pace of infrastructure construction, vigorously developed transportation, water conservancy, energy, communications, environmental protection and other fields, and strived to achieve the leap-forward development of economic development and social progress. Among them, Yunnan Province has taken the lead in developing large-scale highways, railways, airports and water conservancy projects in southwest China, and has continuously improved the level of regional transportation and water conservancy infrastructure. In addition, Yunnan is actively developing new energy, intelligent manufacturing, digital economy and other emerging industries, and vigorously promoting the construction of ecological civilization, making Yunnan one of the important fulcrums of the national "Belt and Road" strategy and China's western development strategy. In a word, the era of large-scale capital construction in Yunnan has gradually developed and expanded in recent decades, and it has been gradually formed under the background of continuous economic and social development and continuous policy advancement.