London's British Museum will soon host the largest collection of terracotta warriors ever to leave China.The Terracotta Army, a collection of figures of soldiers buried about 2,200 years ago to guard the tomb of Qin Shihuang, has begun its journey to London, Chinese news service Xinhua reported Thursday.The Chinese are lending 20 of the life-sized clay statues, along with 100 other artifacts, including weapons and decorative items, to the British Museum.It's the largest loan yet permitted from the spectacular archeological find discovered near Xi'an in 1974."It's going to be the largest exhibition of the Terracotta Army ever to be seen outside China," said Zhao Kun, a specialist at the Xi'an museum that now houses the collection.The British Museum is to exhibit the artifacts from Sept. 13 to April 6, 2008.Last year, the British Museum sent a travelling exhibit to China that included the Rosetta Stone and paintings from European Renaissance masters.Some artifacts from the exhibit will continue their travels in 2008, heading to Atlanta, Santa Ana, Calif., and Houston.