The SHDFZ "Shuiyunjian" Choir participated in the "Military Song Contest" of the Shanghai Primary and Secondary School students' commemoration of the 90th anniversary of the Chinese People's Liberation Army. The number of primary and secondary school choirs participating in the competition reached hundreds. Under the guidance of Teacher Liu Yuxin, the "Shuiyunjian" Choir was highlighted and stunned. A magnificent "I am a Soldier" won the praise of the on-site judges and the audience, and finally won the first prize of "the 90th Anniversary of the Primary and Secondary School Students Memorial of Chinese People's Liberation Army in Shanghai”.