In the 1950’s Lee Sung won an internal power struggle with Xue Zen’s grandfather. Lee Sung was rumored to be a powerful sorcerer and had many of the family’s physical abilities except the ability to astral project. His lack of this ability cost him what he believed his inheritance; the Ring of Shadow and Dreams.
Lee Sung has since built a powerful business empire (Pinyin Properties) while Xue Zen’s side of the family toiled in poverty.
When the Vanguard experienced difficulties with Bishop Fairwell that resulted in their eviction from Center City, Lee Sung utilized his business empire to provide the Vanguard with a palatial headquarters in New York City called the Aerie.