Yang Su
In 593, Emperor Wen commissioned a summer vacation palace, Renshou Palace (仁壽宮, in modern Linyou County, Shaanxi), away from Chang'an, with Yang Su in charge of the project. The palace was far more luxurious than Emperor Wen expected, and its construction cost many lives. (When it was completed in spring 595 and Emperor Wen visited the palace, he was initially very displeased with Yang Su, but Empress Dugu persuaded him that Yang Su knew that he had little other entertainment, and she awarded Yang Su much treasure to show appreciation.)