Nomura Mansai, chief executive creative director of the opening and closing ceremonies, displays a board about the recruitment of cast assistants during a press conference focusing on preparation for the opening and closing ceremonies of the Tokyo Olympic Games, in Tokyo, Japan, Feb. 7, 2020. (Photos: Xinhua)

Nomura Mansai, chief executive creative director of the opening and closing ceremonies, displays a board about the recruitment of cast assistants during a press conference focusing on preparation for the opening and closing ceremonies of the Tokyo Olympic Games, in Tokyo, Japan, Feb. 7, 2020.

Nomura Mansai (L), chief executive creative director of the opening and closing ceremonies, and Nakai Hajime, chief ceremony officer of the Tokyo Olympic organizing committee, reacts during a press conference focusing on preparation for the opening and closing ceremonies of the Tokyo Olympic Games, in Tokyo, Japan, Feb. 7, 2020.