Beilarly professional audio assisted the Yunnan Provincial Federation of Trade Unions China Railway No. 8 Bureau in performing arts and performances. According to the characteristics of the venue and sound field, Beilarly audio engineers used Q1 line arrays on the live sound reinforcement system, paired with dual 18-inch subwoofers and return speakers. The sound field of the entire performance venue is evenly covered, and the sound quality is clear, making the middle frequency round and full, the high frequency is delicate, and the low frequency diving is full of flexibility.