What is the post-Olympic effect?

Post-Olympic effect, also known as post-Olympic trough effect. Refers to the economic recession of the host country and city of the Olympic Games after the Olympic Games. The economic development trend of the host city of the Olympic Games and even the host country has been accelerating from the beginning of the preparations for the Olympic Games to the peak of the previous year and that year. However, after the Olympic Games, this growth momentum will be attenuated to varying degrees, tourism and commerce will quickly fall into recession, stadiums will be idle, the unemployed population will increase, and the local financial burden brought by a large number of investments will make the economic development curve at this time in a downturn.