It's in Hong Kong's oldest colonial building, with exhibits describing the history of tea from the Warring States period (475 221 b.c. ) to the present.
The history of tea is a very intricate subject.  
mnli hypothesis: The history of tea is a very intricate subject.   premise: It's in Hong Kong's oldest colonial building, with exhibits describing the history of tea from the Warring States period (475 221 b.c. ) to the present.