0: It may be a turning point.

Melon: It should be melon. In Cantonese, melon means dead. For example, the old lining of a melon is dead.

Nine: It should be Yi. In Cantonese, one is slang (that is, swearing), which refers to a man's penis for emphasis.

Ahmadinejad: It should be you.

Ah: Yes, modal particles.

H: It should be a person's name.

So, what this sentence means is, go to hell, Han Xuan.

The key literal translation of Mandarin is: I fucking strangle you! Hanyixuan