C1156 Do You Promise or Not

On the day that Chen Yan's studio was redecorated, a very lively welcoming ceremony was held. Chen Yan found an old store and bought firecrackers to put outside of the studio twice. In this era, no one knew how to fire firecrackers, it was almost a simulation gun that imitated firecrackers. However, when the red firecrackers crackled and burned