[speaker001:] May, is this the Hall of Ancient China?
[speaker002:] Yes. Look at these historical relics here, amazing!
[speaker001:] Why are they all in glass boxes?
[speaker002:] For protection. Some relics will turn to dust if exposed to air.
[speaker001:] So there isn't air in the glass boxes?
[speaker002:] No, there isn't. They are all vacuumed.
[speaker001:] I wonder how old these things are, thousands of years?
[speaker002:] Yeah, they all come from a very ancient time.
[speaker001:] Hey, look at the three-leg cup. I've seen it on TV.
[speaker002:] The bronze cup was made 4,000 years ago. It's priceless!
[speaker001:] Yeah, it has no value at all. Who will use this cup today?
[speaker002:] Danny, priceless means so valuable that you can't put a price on it.
[speaker001:] Oh, it does?