With Chinese actor-director Deng Chao's latest directorial work, Looking Up, hitting the screens on July 18, the theme song of the film, The One Who Believes in You, performed by Hong Kong singer Eason Chan, has become of the most streamed songs on major music streaming sites.

Written by Taiwan songwriters Salsa Chan and Daryl Yao, the song portrays the relationship between father and son, echoing the plot of the movie, in which Deng plays the role of a father encouraging his son to pursue his dream.

Recalling how he got involved in doing the song, Chan said he first met Deng during the Golden Horse Awards in Taipei last year, where Deng, along with his actress wife, Sun Li, had been nominated for awards for their roles in Chinese filmmaker Zhang Yimou's movie, Shadow. Chan was also one of the guest performers during the gala.

Speaking about that encounter, Chan says: "We then exchanged phone numbers and a few months later, Deng invited me to watch his new movie.

"I was touched by the father-and-son story as I am also a father. And no matter what, we fathers, always have faith in our kids.

"Then I got an invitation to do the song."

Deng also thanked Chan for his passion and sincerity while working on the song.