Teachers and children show emoji and greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Qinyang, central China's Henan Province, Nov. 19, 2025. (Photo by Yang Fan/Xinhua)

A teacher and children greet each other to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Shijiazhuang, north China's Hebei Province, Nov. 20, 2025.

Teachers and children show emoji and greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Qinyang, central China's Henan Province, Nov. 19, 2025. (Photo by Yang Fan/Xinhua)

A teacher and children greet each other to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Shijiazhuang, north China's Hebei Province, Nov. 20, 2025. (Photo by Chen Qibao/Xinhua)

Volunteers and children greet each other to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Binhai New Area, north China's Tianjin Municipality, Nov. 20, 2025. (Photo by Du Penghui/Xinhua)

Children participate in a greeting game to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Rongcheng, east China's Shandong Province, Nov. 20, 2025. (Photo by Li Xinjun/Xinhua)

Children show emoji and greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Qingdao, east China's Shandong Province, Nov. 20, 2025. (Photo by Zhang Ying/Xinhua)

A teacher teaches children to greet others to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Xingtai, north China's Hebei Province, Nov. 20, 2025. (Photo by Liu Jidong/Xinhua)

A teacher teaches children greeting etiquette to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a primary school in Wuhan, central China's Hubei Province, Nov. 20, 2025. (Photo by Zhao Jun/Xinhua)

A teacher teaches children to draw smiling faces to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Xiangyang, central China's Hubei Province, Nov. 20, 2025. (Photo by Yang Tao/Xinhua)

Students show emoji and greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a school in Qinyang, central China's Henan Province, Nov. 20, 2025. (Photo by Yang Fan/Xinhua)

Students show greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a primary school in Qingdao, east China's Shandong Province, Nov. 20, 2025. (Photo by Wang Haibin/Xinhua)

A teacher teaches children to greet others to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Taizhou, east China's Jiangsu Province, Nov. 20, 2025. (Photo by Zhou Shegen/Xinhua)

(Photo by Chen Qibao/Xinhua)

Volunteers and children greet each other to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Binhai New Area, north China's Tianjin Municipality, Nov. 20, 2025. (Photo by Du Penghui/Xinhua)

Children participate in a greeting game to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Rongcheng, east China's Shandong Province, Nov. 20, 2025. (Photo by Li Xinjun/Xinhua)

Children show emoji and greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Qingdao, east China's Shandong Province, Nov. 20, 2025. (Photo by Zhang Ying/Xinhua)

A teacher teaches children to greet others to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Xingtai, north China's Hebei Province, Nov. 20, 2025. (Photo by Liu Jidong/Xinhua)

A teacher teaches children greeting etiquette to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a primary school in Wuhan, central China's Hubei Province, Nov. 20, 2025. (Photo by Zhao Jun/Xinhua)

A teacher teaches children to draw smiling faces to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Xiangyang, central China's Hubei Province, Nov. 20, 2025. (Photo by Yang Tao/Xinhua)

Students show emoji and greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a school in Qinyang, central China's Henan Province, Nov. 20, 2025. (Photo by Yang Fan/Xinhua)

Students show greeting cards made to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a primary school in Qingdao, east China's Shandong Province, Nov. 20, 2025. (Photo by Wang Haibin/Xinhua)

A teacher teaches children to greet others to celebrate the upcoming World Hello Day, which falls on Nov. 21 annually, at a kindergarten in Taizhou, east China's Jiangsu Province, Nov. 20, 2025. (Photo by Zhou Shegen/Xinhua)