Nighttime video posted online by CGTN, the overseas arm of state broadcaster CCTV, showed furniture and ceiling lamps swaying and livestock suddenly standing up and moving in its pen. Photos from the state-owned China News Service showed scattered damage to homes including a broken window and wall tiles and a large ceiling section that had fallen.
There are five villages within 5 kilometers (3 miles) of the epicenter, the official Xinhua News Agency said.
Service on some sections of a high-speed rail line from Lanzhou in Gansu province to the Xinjiang region was halted because of damage to several tunnels, Xinhua said. Some lines between Qinghai and Tibet were closed and inspectors were sent to check the tracks.
Rescue and firefighting teams in Qinghai and neighboring Gansu province have sent about 500 rescuers to the epicenter, the Chinese Ministry of Emergency Management said in an online statement. Another 2,260 rescuers from neighboring provinces were on standby.
The ministry and the China Earthquake Administration dispatched a team to Qinghai to help investigate the situation and resettle any affected residents.