The colourful process of salt harvesting is captured at the Hon Khoi Salt Fields in Nha Trang, Vietnam in December 2022. (Photo by Hilton Chen/Solent News & Photo Agency)

Pupils of the Dao ethnic tribe return home from school along a hillside path at Suoi Thau village in Hoang Su Phi district of Vietnam's northern province of Ha Giang, located at the border with China, September 18, 2015. (Photo by Reuters/Kham)

A robot named Nia from Beijing Qingfei Technologies Co. Ltd greets visitors to the Zhongguancun Forum at the Zhongguancun International Innovation Center in Beijing, China, Friday, March 28, 2025. (Photo by Ng Han Guan/AP Photo)

Tourists view Hukou Waterfall on the Yellow River in the frigid winter on December 28, 2023 in Yan'an, Shaanxi Province of China. Freezing winter air has turned Hukou Waterfall into an icy wonderland. (Photo by VCG/VCG via Getty Images)

Models wait backstage before the opening show for China Fashion Week, featuring Finnish outdoor gear brand Halti, in Beijing, Thursday, March 20, 2025. (Photo by Ng Han Guan/AP Photo)

A visitor poses for pictures at the Harbin International Ice and Snow Festival in Harbin, Heilongjiang province, China on January 5, 2025. (Photo by Xiaoyu Yin/Reuters)

Visitors outside the venue for Seoul fashion week in Seoul, South Korea on September 3, 2024. (Photo by Lee Jin-man/AP Photo)

A couple wearing protective masks take a picture of a rose on Valentine's Day in Kuala Lumpur, Malaysia on February 14, 2022. (Photo by Hasnoor Hussain/Reuters)