"Shrines generate more Food, Wood, and Coin."—In-game description
Tempo Reforms is a technology in Age of Empires III: The Asian Dynasties that is unique to the Japanese and can be researched at the Shrine once the Industrial Age is reached. Once researched, it increases the rate at which Shrines generate food by 350%, and wood and coin by 300%. This technology also affects the Toshogu Shrine wonder, which acts as two Shrines.
Regardless of the single resource Shrines are tasked to (with the exception of experience points), Tempo Reforms boosts their economic production greatly.