《资治通鉴·隋纪·隋纪一》
左卫大将军广平王杨雄深得隋文帝的宠信，权势显赫，与高、虞庆则、苏威被称为当朝四贵。
左卫大将军广平王雄，贵宠特盛，与高颎、虞庆则、苏威称为四贵。
The Left Guard’s General, Guanping Wang Yanxiong, was Emperor Wendi’s great favorite, and his authority was conspicuous. He, Gao Jixingze, Su Wei, and Yu Qingze were called the "four nobles" of that time.