Both films deal with male prostitution and display extreme sexual content.

Both films show a hitman who forms a special bond with a young kid while trying to start afresh. He can't quite escape from his past, however.

Both films involve a man falling in love with a prostitute.

Both stories are about the desperate lengths a parent goes to while looking for their missing son.

Tough prison conditions, corruption, violence against men.

Both films show corruption and tough conditions in a Chinese prison.

Both movies are about innocent men stuck in jail with bleak odds of proving they didn't do the crime they're being charged with.

Both stories follow two men as they struggle to prove their innocence in the Japanese legal system against all odds.

Both are gay-themed films starring Hu Jun.

Both films feature a homosexual relationship where one of the men doesn't value/appreciate the other until they are gone. It is only then that they realise how much in love with their partner they really were. But will it be too late?

Both films have the same Western-outlaw vibe. They both tell the story of a gang of rogues who live by their own rules.

Both movies are based on the same opera called The Great Revenge of the Orphan of Zhao.