Fist of Legend is a direct sequel to Fist of Fury.
=== Sequels of the novel ===The origin of the sequel as it is conceived in the 21st century developed from the novella and romance traditions in a slow process that culminated towards the end of the 17th century
A sequel  is a work of literature, film, theatre, television,  music or video game that continues the story of, or expands upon, some earlier work

