Nirvana in Fire (Lang ya Bang)

In sixth-century China, the Emperor of Great Liang orders the unjust execution of his brother-in-law Marshal Lin Xie alongside the Lin family, his 70,000 army soldiers, and Crown Prince Qi. Secretly surviving the massacre is Lin Xie's son, Lin Shu, who undergoes medical treatment that changes his appearance entirely and leaves him in a weakened state, unable to ever perform martial arts again. Lin Shu changed his name to Mei Chang Su and later became the chief of the pugilist world and established the Jiangzuo Alliance. Twelve years later, Mei Chang Su returns to the capital with a secret plan after being sought after by Prince Yu and Prince Xian during their fight for the throne. He decides to covertly assist Prince Jing, the unfavoured son of the Emperor, and wisely rids the court of all scheming officials.