Japan's Olympic Committee President Tsunekazu Takeda attends the 30th executive board meeting as a vice president of the Tokyo 2020 Organizing Committee in Tokyo, Japan, on Feb. 15, 2019. (Photos: Xinhua)

Tokyo 2020 CEO Toshiro Muto speaks during the 30th executive board meeting held by Tokyo Organizing Committee of the Olympic and Paralympic Games in Tokyo, Japan, on Feb. 15, 2019.

Photo shows the venue of the 30th executive board meeting held by Tokyo Organizing Committee of the Olympic and Paralympic Games (Tokyo 2020) in Tokyo, Japan, on Feb. 15, 2019.

Photo shows the venue of the 30th executive board meeting held by Tokyo Organizing Committee of the Olympic and Paralympic Games (Tokyo 2020) in Tokyo, Japan, on Feb. 15, 2019.

President of the Tokyo 2020 Organizing Committee Yoshiro Mori (C) gives a speech during the 30th executive board meeting held by Tokyo Organizing Committee of the Olympic and Paralympic Games in Tokyo, Japan, on Feb. 15, 2019.

President of the Tokyo 2020 Organizing Committee Yoshiro Mori gives a speech during the 30th executive board meeting held by Tokyo Organizing Committee of the Olympic and Paralympic Games in Tokyo, Japan, on Feb. 15, 2019.

Photo shows the venue of the 30th executive board meeting held by Tokyo Organizing Committee of the Olympic and Paralympic Games (Tokyo 2020) in Tokyo, Japan, on Feb. 15, 2019.