Ai Wanxiu, an expert at the National Climate Center, said tropical high-pressure fronts had caused greater rainfall than normal in the northern parts of the country. "The precipitation in northern China was the strongest in July," she said.

Gansu's meteorological center has continuously issued yellow and orange alerts－respectively the second-lowest and second-highest in a four-tier warning system for hazards like landslides－in the first nine days of August.

Rain is expected to continue until Monday, according to Lanzhou meteorological center.