Lara Croft: Tomb Raider Easter Egg - The Dagger of Xian

When Lara is entering the Auction house, you will hear some noises in the background. If you listen VERY closely, you'll heard the auctioneer saying the item which is going to be sold is "The dagger of Xian". After a while, Lara talks to Alex about a "Prayer Wheel". These both are hidden references to Tomb Raider 2 (the videogame).