People participate in event in celebration of Children's day in Tokyo, Japan

Traditional carp-shaped windsocks called "Koinobori", a symbol of good health and strength for children, are hung up in celebration of the Children's day in Tokyo, Japan, May 5, 2025. (Xinhua/Jia Haocheng)

A girl participates in an event in celebration of the Children's day in Tokyo, Japan, May 5, 2025. (Xinhua/Jia Haocheng)

Traditional carp-shaped windsocks called "Koinobori", a symbol of good health and strength for children, are hung up in celebration of the Children's day in Tokyo, Japan, May 5, 2025. (Xinhua/Jia Haocheng)

People participate in an event in celebration of the Children's day in Tokyo, Japan, May 5, 2025. (Xinhua/Jia Haocheng)

Traditional carp-shaped windsocks called "Koinobori", a symbol of good health and strength for children, are hung up in celebration of the Children's day in Tokyo, Japan, May 5, 2025. (Xinhua/Jia Haocheng)

People participate in an event in celebration of the Children's day in Tokyo, Japan, May 5, 2025. (Xinhua/Jia Haocheng)