   neutral   So there isn't air in the glass boxes?     neutral   No, there isn't. There is a vacuum in every box.  
    neutral   I wonder how old these things are. Thousands of years?     happiness   Yeah, they all come from a very ancient time.  
    happiness   Hey, look at the tripod. I've seen it on TV.     happiness   
 This piece looks different today! 
 It has never been out to any public places before. 1540 yuan! What