if you read the theorys in the story part of the shenmue dojo site you'll find the part about chen and zhu's stories, if you cant find it its here
http://planetxbox.com/shenmuedojo/files ... tories.txt
the question of which one is lying is easy to answer, niether of them are, first off chens story was just a legend about the pheonix and dragon, and zhu's was what actually happened when the mirrors were put together, and about the whole quin dynasty thing, the Quin dynasty WAS 2000 years ago, the QIN dynasty was in the 18th century, but maybe i just have that backwards and it was a typo in the game, or maybe he was lying but i really dont think so