It is singing water. When marching, the honor guards of senior high schools in Taiwan Province, China often use singing to boost morale and show their momentum, such as singing team songs, or expressing the school spirit and the team concept of the honor guards according to different school slogans and lyrics. For example, Xiufeng Middle School in Taipei uses "flying crane" to boost morale, and Nanmen Middle School uses "iron discipline to exercise body and mind, and success or failure will engrave history" to boost spirit.