Back to Story
One of visitors waits to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

One of visitors waits to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Ri Ri at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Ri Ri at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors queue to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors queue to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors wait to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors wait to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors take a look at a banner saying " Thank you Ri Ri and Shin Shin, with 5,000 days of gratitude" after they saw the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors take a look at a banner saying " Thank you Ri Ri and Shin Shin, with 5,000 days of gratitude" after they saw the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors react after visiting the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors react after visiting the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors react after seeing the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors react after seeing the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors wait to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors wait to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors watch the giant panda Shin Shin at Ueno Zoo, a day before giant panda couple Ri Ri and Shin Shin's return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors wait to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

Visitors wait to see the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

One of visitors reacts after seeing the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)

One of visitors reacts after seeing the giant pandas Ri Ri and Shin Shin at Ueno Zoo, a day before their return to China, Saturday, Sept. 28, 2024, in Tokyo. (AP Photo/Eugene Hoshiko)