In The Analects of Confucius, it is recorded that Confucius met Wei Linggong's misbehaving wife Nanzi, which caused his disciples to "break up in discord", so Confucius swore to heaven to prove his innocence, but no one could know the reason. In archaeology, the capital city of Weiguo, where Zi Jian Nan Zi is located, has always been equally mysterious.