The Olympics is a grand sports event, but there are also cases in history where it has suffered severe losses, such as the Beijing, Athens, and Tokyo Olympics, which have all been painful lessons. The skyrocketing costs and economic lessons, as well as the operation of venues after the Olympics, are also the biggest problems plaguing countries around the world. Looking at the global situation, many host cities have faced difficulties in supporting the high maintenance costs of venues and facilities, and some have even led to economic recession. So, 16 years ago, how has China's investment of 3.4 billion yuan in building the Bird's Nest fared in terms of subsequent operation and utilization? Has it been a gain or a loss? Where does the annual maintenance cost of over 80 million come from? In August 2008, athletes and coaches from 204 participating countries and regions around the world gathered in China to participate in the 29th Summer Olympics. As the host country, we did not disappoint, eventually topping the Olympic medal table with 51 gold medals, becoming the first Asian country to reach the top of the gold medal standings in Olympic history. On August 24, 2008, the Beijing Olympics came to a successful conclusion. This 17-day sports feast captured countless memorable moments and left behind many unforgettable memories. However, after the celebration, when the sacred flame was extinguished and the flag lowered, the operation of the Olympic venues became the biggest challenge. Building the Bird's Nest was no small feat, requiring significant time and effort. After its completion,…