Asian short film about a man buried up to the neck

Hi, I’m looking for an asian short film I saw on TV around 2010.

The movie takes place in a park and it follows a man who tries to suicide by hanging himself from a tree but when the moment to jump is coming, he sees another man buried up to the neck in front of him. The buried man then negotiates with the other man to dig him up before committing suicide.

The general colorimetry of the film is very pale with a blue dominance and I think that’s the limit of my memories. I hope that’s understandable enough, I’m not very comfortable with english.

Thanks for the read and have a good day !