Correct me if I'm wrong, but in the book on page 183, when Pimms, Powell, and Alex are going in to the tomb in Cambodia, an old guy who speaks Mandarin (Chinese dialect) says "Good-bye. Sayanora." I'm currently taking a Japanese course, and (I'm not sure if this is even the Japanese spelling!)in Japanese, 'sayanora' is good-bye. That's what the Mandarin dude said, but if Mandarin is Chinese dialect, then why did he say something in Japanese? If you ask me, I think the producers/writers should have studied more!