Snowpiercer is co-written and directed by a teenager.
The film is directed by Bong Joon-ho , and written by Bong and Kelly Masterson .	Bong Joon-ho	Bong Joon-ho	Kelly Masterson	Kelly Masterson
Bong Joon Ho -LRB- , -LSB- po tunho  podunho -RSB- ; born September 14 , 1969 -RRB- is a South Korean film director and screenwriter .	screenwriter	screenwriter	film director	film director
