Starring Jackie Chan, Fara Miho and Mirai Yamamoto, the film "Who Am I" is a Hong Kong action film released in 1998 on New Year's Day.

Scientists have discovered an ore in South Africa with powerful lethality that produces great energy if shaken.
The CIA arranged for nine special forces to go to South Africa to hijack three scientists and the ore.
However, on the way back, the plane crashed and fell, except for Jack, who was rescued by the local natives, and all the other special forces soldiers were killed.
Due to the severe head injury, Jack has completely lost his memory of what has happened, he does not know who he is, and the people of the tribe have named him because he always asks himself "Who am I?".
Since then he has lived a happy life of a primitive tribe (that is, a group of people, give a bunch of fires, and start to dance, hahaha)
IQ is really a good thing, Jackie Chan is mistaken for a primitive person, but he can repair cars, infusions, drive everything, simply omnipotent.