Why was the Tokyo Olympics not "congratulated" by the Emperor of Japan?

{"info":{"title":{"content":"东京奥运会，为何没有被日本天皇“祝贺”？","en":"Why was the Tokyo Olympics not \"congratulated\" by the Emperor of Japan?"},"description":{"content":"7月23日，在东京国立竞技场，日本奥委会名誉主席德仁天皇向世界宣布：值得“纪念”的东京奥运会拉开了帷幕。图源：视觉中国日...","en":"On July 23, at the Tokyo National Stadium, Emperor Naruhito, honorary president of the Japanese Olympic Committee, announced to the world that the \"memorable\" Tokyo Olympic Games have begun. Image source: Visual China Day..."}},"items":[]}