Technology tiles

 follow a number of standards in the game Oriental Empires

Time to Learn

 * The number in the upper left corner of the technology tile denotes the number of turns required to master this area of technology. Those in the active study bar at the bottom show the amount of time remaining while those in the general tree show the total time that will be required.
 * As each technology progresses toward mastery it's tile background will fill with the school's identifying color.
 * For example, after studying Astronomy for 5 turns, the sample tile to the right would have a bit more than half it's background "filled up" with green.
 * Note: Once earned, progress toward a technology is not lost if one switches to a different technology. One can switch and then come back and complete their study of the postponed technology with no loss.

Drawing Color

 * The color of the base drawing indicates which "school" a technology belongs to.
 * Red signifies the Power school of technology
 * Gold signifies the Craft school of technology
 * Blue signifies the Thought school of technology
 * Green signifies the Knowledge school of technology

Primary Benefit

 * Each technology may have more than one benefit but there is an indication of what will be the primary benefit at the bottom of most tiles.
 * Black Fist - An increase in Authority
 * White Lotus Blossom - An increase in Culture
 * Red Swords - A new or improved military ability or unit
 * Blue Sailboat - A new or improved naval ability or unit
 * Gold Coin - An improvement in Trade
 * Green Plants - An improvement in Agriculture
 * Some technologies have primary benefits that cannot be this simply summarized and will show no primary benefit icon.