On July. 6th 2021, The Third “Summer in Poly” Shanghai Children’s Chorus Festival Revealed on at Shanghai Poly Theatre, with over 50 Children’s Chorus Teams across China attending the Competition. Among them, 22 of which are Poly Teams from its theatres, the rest consists of teams from local schools, as well as teams from other provincial chorus associations invited by China Chorus Association, with over 3,000 singers.