Why is Long song Line 49 gone?

There are still 49 long songs, and the complete works of long songs are only 49 episodes. There is no such thing as deletion. There are 49 episodes of Long song, each episode is 45 minutes, and there may be some plot cuts in the middle, but the number of episodes announced from the beginning of the drama is 49, but there are no 50 episodes. The last seven episodes of the complete works are the highlights of the whole play and the most tearful fragments of the audience. Every character has his own home.