 Lý Công Uẩn also built Trường An Citadel in the former capital Hoa Lư to further fortify the garrison for military defense and Thiên Đức Citadel in Cổ Pháp village as a tributary honor to his childhood home town.Having begun life as a Buddhist monk, Lý Thái Tổ practiced Buddhism and promoted it as the national religion.As a result, he gave much support to the Buddhist clergy and institutions.