The archaeological excavation of Cao Cao's Mausoleum in Xigaoxue Village, Anfeng Township, Anyang County, Henan Province has resumed, and CCTV carried out a live broadcast on site. Another "iron proof" determining the tomb owner to be Cao Cao -- a stone tablet inscribed with the words "Chang Suo Yong Chang Xi Dun" (often used long rhino shield) was unearthed. This is the first time that a stone tablet with the word "shield" appeared in the tomb, indicating that the tomb owner had used this type of weapon during his lifetime. The much-anticipated excavation of the No. 1 accompanying burial tomb was disappointing. Due to severe theft, apart from a severely rusted iron sword, no other cultural relics were unearthed in the accompanying burial tomb.
Source: http://www.jnlagua.com/thread-793-1-1.html