When you are in a low mood you can listen to even lower songs. That way you can get all those tears out of your eyes at once, and there's nothing to be upset about when you get those things out of your heart. Then you can listen to some refreshing songs, find some comfort in those songs, and listen to those happy songs. Be happy yourself. I've tried the first, and I've tried the second. Both are not bad. But privately, I think the second one works well.
The first one, the first push Zhang Bichen's "The Next Second", which is a very sweet song from the TV series "Wei Wei Yi Yi Qing Cheng". Between the lines is the sweet aroma of falling in love, if you have a girlfriend, you can feel that kind of joy, if not, do not doubt that this is to trick you into falling in love. It's still something you can listen to when you're feeling down, and feel all those hurts you've suffered, and it's actually all very happy in another person, yo. You'll be fine.
The second song is a pure music "letter", as the name suggests, is a love letter. If you like someone, you have to tell them. It doesn't matter if you get rejected. This song in the beginning is indeed very ordinary, but believe me, in hearing 43 seconds, you will have a kind of living up to the initial feeling, will have a kind of good I insisted on the feeling, the prelude is a little bit low, but in the 43 seconds after the beginning of the peak, has been the crush has a result of that kind of feeling, believe in yourself, no one can be more than their own control of their own feelings, you have to be good.
The third song, Gao Shan's "I met you when all the stars fell on my head", this is a very good song, coupled with Gao Shan's voice, I have to say, it is a kind of enjoyment, as if the university when the Mersheng and Yichen, together is the whole life, you will meet, right? No matter what kind of suffering you are in right now, but believe that there is no no nothing that can't be passed, just can't go back anymore.
There's also "the star", "take you on a trip", "love is you", and so on are all good. In fact, I feel that as long as you don't listen to Xue Zhiqian and Eason Chan it's fine haha.