On the Third-Year of Kaihuang, as the Great Sui unfolds its curtains to welcome the glorious Tang Dynasty in succession to the Northern Dynasty, Yang Jian established a secret agency, the Jiejian Bureau in p...

In the third year of the Kaihuang era, as the Great Sui began to unfold between the fall of the Northern Dynasties and the rise of the glorious Tang Dynasty, Emperor Yang Jian created the House of Blades –...