 The Lý dynasty is credited for laying down a concrete foundation for the nation of Vietnam.Leaving Hoa Lư, a natural fortification surrounded by mountains and rivers, Lý Công Uẩn moved his court to the new capital in present-day Hanoi and called it Thăng Long (Ascending Dragon).Lý Công Uẩn thus departed from the militarily defensive mentality of his predecessors and envisioned a strong economy as the key to national survival.