In Xian we saw the Terra Cotta Army and the museum. it's unbelievable but every one of these soldiers is different. The Emporor wanted to be sure he returned in his next life with a suitable army so all these statues were burried with him in his tumb. There are unopened areas of the soldiers because oned these were uncovered, they lost their color and now appear to be plain grey. They want to find a way to perserve the color before uncovering any more of hte statues.