Wan mei shi jie (Beijing) ying shi wen hua you xian gong si, Dalian hong yuan ying shi chuan mei you xian gong si, Liaoning dian ying zhi pian chang ; zhi pian ren, Ch'oe, Kwang-sŏk, Gan Huiyin ; bian ju dao yan, Zhang Meng = The piano in a factory / Perfect World (Beijing) Pictures Co., Ltd., Dalian Hong Yuan Film & TV Co., Ltd., Liao Ning Film Studio ; producers, Choi Guang-suk, Jessica Kam Huiyin, screenplay/director, Zhang Meng