After Danny Chan died, why didn't Leslie Cheung, who loved him the most, help the ghost?

Danny Chan, Leslie Cheung, Alan Tam and Anita Mui were the "Four Heavenly Kings" in the 1980s. "Chen" and "Zhang" were good friends, but later they became friends! The reason for making friends is actually a bit ridiculous.

That is, Danny Chan and Leslie Cheung were drinking and chatting with some friends one night, during which a girl asked "Danny Chan". Your skin is "white and red" and "different". What maintenance secrets do you have? At that time, Chen's answer was; I don't use any cosmetics. I usually use a bar of soap at most. At this time, "Leslie Cheung" listened and said yes? Reached out and scratched Chen's face twice, and then put it on a paper towel for everyone to see. This is not cosmetics. What is this? At that time, "Danny Chan" stood up without saying anything and turned to leave. Later, I told "Leslie Cheung" through my agent; I will never see you again in my life! It's not like ordinary people drink a little wine and sprinkle a little alcohol. I really made up my mind to make friends.

After making friends with this matter, the two also acted in a movie together. In this movie, as long as there is a shot of Danny Chan, there is no Leslie Cheung, and as long as there is a shot of Leslie Cheung, there is no Danny Chan! The film is called Merry Christmas.