Generally, fans who participate in the program will get the slogan of the staff (formulated by the person in charge of the function) and assistance (that is, blue balloons and green balloons). It seems that wanting to participate in Function's CB plan is to buy an album and then draw lucky fans from it. (I don't know the specific operation) But what is certain is that the slogan of function songs is different for each song, and it is formulated by special staff. Staff will also post it on the function official website. Only an idiot would do that. Dear, if you want to learn, you can go to the first stop of Hong Kong Yinyuetai fx. They made a teaching video: i.yinyuetai.com/12158394/MV.