Ip Man 4: The Finale is a 2019 martial arts film directed by Wilson Yip and produced by Raymond Wong. It is the fourth and final film in the Ip Man film series, which is loosely based on the life of the Wing Chun grandmaster of the same name, and features Donnie Yen in the title role. A co-production of Hong Kong and China, the film began production in April 2018 and ended in July of the same year. It was released on 20 December 2019.
In 1964, following the death of his wife, Ip Man discovers he has throat cancer due to chronic smoking. After his rebellious son Ip Ching fights back against a school bully and is subsequently expelled, Ip Man decides to travel to San Francisco to look for study opportunities. He entrusts Ching to his friend, Fat Bo, and promises to call Ching every night. Ip's student, Bruce Lee, has upset the local martial arts community in San Francisco by opening a Wing Chun school, teaching non-Chinese people martial arts, and writing an English-language book on martial arts. He discovers from his friend Liang Gen that because Ip is a foreigner, a referral letter from the Chinese Consolidated Benevolent Association is needed to enroll Ching into an American school. Grandmaster Wan Zhong-hua, the Association's president, refuses to write the letter as Ip is unbothered by Lee's actions, whereas the other grandmasters display open contempt. After a brief confrontation with Wan, resulting in a broken tabletop, Ip leaves.
While leaving the school after a meeting with the principal, Ip chances upon Wan's teenage daughter, Yonah, undergoing a racist attack from a rival cheerleader, Becky, and her male friends. Yonah fights back which results in Becky accidentally cutting herself on a pair of scissors. She is ultimately outnumbered, and Ip steps in to rescue her. He escorts Yonah home, where Wan accuses Ip of using his daughter merely to get the letter and challenges him to a fight for it. The duel is interrupted by an earthquake, and Wan tells Ip they will finish their fight at the upcoming Mid-Autumn Festival. Ip refuses, explaining that he merely accompanied Yonah home for her safety and leaves.
Becky lies to her parents, claiming that she had been attacked by Yonah. Her father, Andrew Walters, is an officer of the Immigration and Naturalization Service (INS) and is pressured by his wife into holding the Association responsible and deporting all illegal immigrants associated with them. Meanwhile, Hartman Wu, a Staff Sergeant in the United States Marines and student of Lee, attempts to convince Barton Geddes, the Gunnery Sergeant on his base, to incorporate Chinese martial arts into their hand-to-hand combat training. Geddes, an openly racist man, proves the Marines' current Karate program superior by having Hartman fight the Marines' Karate instructor, Colin Frater, who defeats him. Hartman later manages to convince the unit's commanding officer of Kung fu's potential and is instructed to film the Mid-Autumn Festival happening at Chinatown for research purposes, infuriating Geddes.