Temple of Literature? (Văn Miếu – Quốc Tử Giám?) It sounds like a grandiose name for a library, but it’s really what the Vietnamese call a Confucian temple. This one is in Hanoi.
Confucius was a Chinese philosopher famous for his ideas such as the hierarchical nature of relationships and how governance is practiced morally. His philosophy provided a popular counterpoint to the more free-wheeling Taoist belief system. Both Confucianism and Taoism came to be practiced by some as religion (though other advocates of each would say that it’s philosophy and not theology.)