The Four Seas Gang, or FSG (四海幫, or Si Hai Bang) is a triad society based in Taiwan and founded in May 1954.
It includes mainland Chinese and their descendants who fled to Taiwan with the KMT.
Its members have extended their influence to cities in the southern region of California.
Four Seas Gang is active in alien smuggling in Southern California.
Since the 1950s development, Four Seas Gang organization has 86 branches, members and partner relations up to 50,000 people.