This photo taken on Aug. 8, 2018 shows a sea of clouds over the Lesser Khingan Mountains in Yichun, northeast China's Heilongjiang Province. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua)

This photo taken on March 10, 2025 shows a piece of wood carving artwork at a company in Yichun, northeast China's Heilongjiang Province. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Wang Song)

An aerial drone photo shows a recreational vehicle campsite of Xing'an National Forest Park in Yichun, northeast China's Heilongjiang Province, July 11, 2024. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Zhang Tao)

This photo taken on March 11, 2025 shows birch sap products at a company in Yichun, northeast China's Heilongjiang Province. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Xie Jianfei)

Workers pack black fungus at a company in Yichun, northeast China's Heilongjiang Province on March 10, 2025. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Xie Jianfei)

Tourists look at a wood inlay painting at a wood art gallery in Yichun, northeast China's Heilongjiang Province, March 10, 2025. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Xie Jianfei)

A staff member inspects the growth of grafted Korean pine seedlings at a breeding base in Yichun, northeast China's Heilongjiang Province, March 13, 2024. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Xie Jianfei)

Tourists visit the Wuying National Forest Park in Fenglin County of Yichun, northeast China's Heilongjiang Province, March 11, 2025. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Xie Jianfei)

staff members monitor fire prevention systems at a forest fire command and dispatch center in Yichun, northeast China's Heilongjiang Province, March 10, 2025. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Xie Jianfei)

This photo taken on March 10, 2025 shows plant specimens at the Yichun Forest Museum in Yichun, northeast China's Heilongjiang Province. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Xie Jianfei)

An aerial drone photo taken on July 11, 2024 shows a sightseeing vehicle running at Shangganling stream forest park in Yichun, northeast China's Heilongjiang Province. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Zhang Tao)

People work at the construction site of Yichun West Railway Station in Yichun, northeast China's Heilongjiang Province, Sept. 27, 2023. Stretching across 4 million hectares, the vast forests embrace Yichun City of northeast China's Heilongjiang Province from all directions. According to local forest rangers, nearly half of Yichun's total area has been designated as ecological protection zone. The city's forest stock volume increases by over 10 million cubic meters annually, and its forest coverage rate is more than three times the national average.

With a forest coverage rate of 83.8% and home to Asia's largest primeval Korean pine forest, Yichun enjoys uniquely rich natural endowments. In 2021, all ten counties and districts of Yichun were awarded the title of China's "natural oxygen bar." (Xinhua/Wang Song)