The opening ceremony of the 7th Olympic Games (1920) is unusual because it has just experienced a world war. On the morning of the opening of the August 14 Games, the Archbishop of Belgium held a mass in the church in the center of Antwerp to mourn the famous Olympic athletes who died in World War I.. In the afternoon, the official opening ceremony was held in Antwerp Stadium. After the opening ceremony of His Majesty King Albert of Belgium, the Olympic flag designed by Coubertin 19 13 was raised for the first time.

19 13, the Olympic flag was determined at Coubertin's suggestion, and was first raised at the Paris Olympic Congress in 19 14 to celebrate the 20th anniversary of the founding of the International Olympic Committee. The pattern of the Olympic flag is embroidered with the Olympic rings on white silk. The national flag is rectangular, and the colors of the rings are blue, yellow, black, green and red from left to right. 1920 After the Antwerp Olympic Games, the Belgian National Olympic Committee presented the flag used in the conference to the International Olympic Committee and became the official flag of the International Olympic Committee. Since then, every Olympic Games has held the handover ceremony of the Olympic flag, only using a substitute with the same pattern but larger specifications. The flag of the Winter Olympics was presented by Oslo 1952, Norway, and its handover and use are the same as those of the Summer Olympics.