117 years ago today, on July 13, 1908 (June 15, 1908 lunar calendar), the fourth Olympic Games opened in London. At the opening ceremony of the London Olympic Games, the delegations dressed uniformly according to the regulations and guided the following teams to the fourth Olympic Games under their respective flags. The opening ceremony was held in London, England on July 13, 1908, but the competition began on April 27 and ended on October 31. It lasted 6 months, making it the longest in the history of the Olympic Games. There are 24 major events; 2,034 athletes (including 36 women) from 22 countries participated. Britain won 56 gold medals, topping the list, followed by the United States with 23. On July 13, 1908, competitors from 22 countries on five continents came together. At the opening ceremony, the delegations were guided by their own flags and entered the meeting uniformly. However, due to the flag issue, some disputes arose at the opening ceremony. Sweden and the United States protested to the organizing committee when they found that their flags were not flying at the venue; the American team's flag bearers did not lower their flags when passing by the British king, causing a commotion; Finland was still under Russian rule, and they refused to participate in the opening ceremony because they considered it a disgrace to enter under the flag of the occupying power. Despite these unpleasantness, the delegation's uniform dress and the practice of guiding the following teams to the venue under their respective flags set a precedent for future sessions. For the first time, the London Olympics also released the statistics of the winners of each country, which has a positive impact on the statistics of other countries in the future. Although the London Olympics lasted for more than six months (the official competition began on April 27.), and the friction between the United States and the United States ran through the entire event, some of the rules and regulations it formulated and implemented set an example for future Olympic Games. At the London Olympics, the athletes who participated in the marathon were walking towards the starting point. Although Pietri became the loser of the competition, his enterprising spirit infected everyone present. A British bishop named Peter said with emotion: "The important thing in the Olympic Games is not to win, but to participate." After the 800-meter and 1500-meter runs, May Shepard won another gold medal for the US team in the relay, becoming the athlete with the most gold medals in track and field at the London Olympics.