Lanzhou in north-west Gansu ranked last, while Haikou on southern Hainan island was rated with the cleanest air.
The presence of decomposing humans in the waterway is not just limited to the area around the Gansu capital.
In 2008, he was convicted by a court in the western province of Gansu, where the sarcophagus was from.
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Guan Yiquan, a Chinese scholar in Lanzhou, the capital of Gansu, also became convinced that Liqian had links to Rome.
Around the same time as Sanya's protest began, a smaller taxi strike was also reported in Gansu province in the north-west.
Eager to escape Beijing, he volunteered for a post at the Liujiaxia Hydraulic Power Plant in the northwestern province of Gansu.
One baby in Gansu province has died as a result of kidney stones related to the milk powder, the news agency said.
In Ningxia, Gansu and Inner Mongolia, for example, they are drawing far more than their fair share of the Yellow River's water.
Last month the former director of a social-security fund in Gansu province was sentenced to death for embezzling 28m yuan over a decade.
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In Gansu and Qinghai Provinces and throughout north-central China, people of nine different ethnic groups share a music tradition known as Hua er.
Dubs says the Chinese kept the ex-legionaries as frontier guards, installing them in a specially created town called Liqian in what is now Gansu.
Investigators said the industrial salt nitrite had been added to fresh milk at two dairies in the north-western Gansu province in order to harm people.
In Gansu, a party boss has been sacked for forcing villagers to buy mobile phones to "raise their intelligence", South China Morning Post reports.
In Zhouqu County in the Gannan Tibetan Autonomous Prefecture in Gansu Province, the death toll stands at around 340 with over a thousand people still missing.
Police in Gansu province have arrested five Tibetans, including a 21-year-old monk, for allegedly inciting three Tibetans to die by self-immolation, The Beijing News reports.
He had come the way I had, from Xian, 1, 600km westward down the Gansu corridor between the wastes of the Gobi and the cold heights of the Qilian Shan.
The story begins in 1992, when an army unit from Lanzhou in neighbouring Gansu province, drilling with state permission, made a decent oil find in Jingbian county.
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Raedemaeker was initially held in Gansu but was later allowed to live with his partner in a Beijing hotel because of his poor health, media reports say.
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In the north Ningxia, Shanxi, Hebei and Gansu are drought-stricken.
State media have not confirmed reports by Tibetan rights blogger Woeser and overseas Chinese-language media on the self-burning death of Lhamo Kyab in Gansu's Xiahe county on Monday.
The government of Gansu province in China's west says it told the Ministry of Health on July 16th about an unusual upsurge of kidney stones among infants who had all drunk the same brand of milk.
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As a matter of fact, they already launched that aircraft carrier we bought them, along with a Tiangong-1 rocket that lifted the first module of a planned Chinese space station to orbit from a launch site in the Jiuquan, Gansu province.
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During the past few years the storms have grown in ferocity and scale, and they are at the vanguard of an advancing Gobi desert that threatens more than 400 million people in the Chinese provinces of Xinjiang, Inner Mongolia, Gansu, Ningxia and Shaanxi.
Wind power is also being experimented with in a small way for power generation in northern and western China, where it could supply electricity to rural villages in windswept and increasingly arid Inner Mongolia and Gansu Province that are still not on the grid.
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