The Superpower (天降財神) is a TVB Scifi television series, premiered in Hong Kong in 1983.
An extraterrestrial alien who crashed from space landed in Hong Kong, nearly dying from the crash.
He survived by inhabiting a human corpse (Chow Yun-fat) and was saved by Kwok Hak-cung, (Tony Leung) who gave him water.
The alien then helped Kwok in things such as winning lotteries and other aspects of life.