By Bloomberg News

July 10 (Bloomberg) -- An earthquake in China’s southwestern Yunnan province left one person dead and 325 injured, the provincial government said.

More than 400,000 residents need to be relocated or evacuated after the magnitude-6.0 quake struck at 7:19 p.m. local time yesterday in Guantun Township, about 200 kilometers (124 miles) from the provincial city of Kunming, the official Xinhua News Agency reported.

Eight aftershocks rattled the region as relief officials distributed tents, medicine and food to people whose homes were destroyed, Xinhua said. The Chinese People’s Liberation Army has sent more than 1,000 troops into the area to search for residents who might be buried under the rubble.

A magnitude-5.0 quake struck the province at 5:02 p.m. today, 85 kilometers east of Dali, at a depth of 10 kilometers, the U.S. Geological Survey said. A magnitude-4.1 aftershock rocked the area last night, Xinhua said.

About 18,000 houses were toppled and 75,000 buildings damaged across the province as of 8:30 a.m. today, the news service said.

Relief on Route

Officials in Yunnan plan to send 4,500 tents, 3,000 quilts and other relief items to the quake zone, Xinhua said. Teams from the Ministry of Civil Affairs, the National Commission for Disaster Reduction and the China Earthquake Administration are heading to the epicenter.

Sichuan province in central China is still recovering from last year’s 7.9-magnitude earthquake that killed almost 70,000 people, flattened 4.5 million homes and left millions homeless. It was the country’s deadliest natural disaster in almost three decades.

About 3 percent of the 216,000 buildings that collapsed in the first two days after the Sichuan quake were schools, prompting parents to question whether shoddy construction added to the death toll. The government announced two months ago, shortly before the May 12 anniversary of the disaster, that 5,335 children were killed in the quake.

The U.S. Geological Survey put the magnitude of yesterday’s main quake at 5.7 with a depth of 10 kilometers.

The earthquake had no impact on mining or smelting operations at Yunnan Tin Co., Li Xia, an investor relations official, said by phone today. Yunnan Tin is the world’s biggest producer of the metal. Yunnan Aluminium Co. was also unaffected, Wang Jishi, an official at the company, said by phone.

To contact the Bloomberg News staff on this story: Eugene Tang in Beijing at eugenetang@bloomberg.net; Li Xiaowei in Shanghai at Xli12@bloomberg.net.