Wait for the students to practice almost, then go to the queue, and recommend one first:
There are usually several steps in the lobby. Take the fifth floor as an example. The first four floors are the smallest, and so on. 9 people on the first floor, and then on the fifth floor 10 people. The two sides of each floor are 60 degrees inward to the left (depending on the situation), and the left and right sides of 10 people in the last row are 45 degrees to the left (you can decide for yourself, just look good). Ok, that's all, I hope you can adopt it.
It's not interesting, it's a prop,
Everyone can take a balloon (hydrogen) and scatter it into the sky at the end of the song, or you can make it yourself.
For example, find a piece of cardboard, cut it into a heart shape, (or something else, it should be beautiful) and write a blessing on it. Take the song "Descendants of the Dragon" as an example, it should be written, I wish the motherland.
You can also take all the balloon cardboard and cut out some cardboard. When balloons are scattered into the sky, they will glow, which is beautiful and saves money!