A worker pastes labels for honey products at a workshop of a black honey company in northeast China's Heilongjiang Province, July 30, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

Yue Yun shows black honeybees at a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province, July 29, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

Yue Yun checks honeybees at a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province, July 29, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

Yue Yun cleans honeycomb at a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province, July 29, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

Workers of a cooperative check honeybees at a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province, July 29, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

A drone photo taken on July 29, 2026 shows a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

A worker puts a honeycomb into a bag at a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province, July 30, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

Yue Yun checks the quality of honey by taking out part of a honeycomb at a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province, July 29, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)

A worker prepares to take the honeycomb at a honeybee farm at a national nature reserve in Raohe County of northeast China's Heilongjiang Province, July 30, 2026.

Yue Yun, a villager in Shuangsheng Village of Raohe County in northeast China's Heilongjiang Province, has been doing the business of black honeybees for 33 years.

To expand the market of honey produced here, Raohe County in recent years has introduced leading enterprises, which set up cooperatives here and also offer technique training for honeybee farmers, to ensure the quality of honey products.

By far, at the national nature reserve of northeast black honeybees, about 431 honeybee farms have been established and more than 1,300 related workers have been involved. (Photo by Zhang Chunlei/Xinhua)