It is worth mentioning that imitation function is one of Hu's playing skills. It can imitate people's laughter, the cries of roosters, hens, dogs and other animals, and can also imitate the sounds of some percussion music. For example, Liang Xianjun's Dashboard is to imitate people's laughter by pulling a bow. In "Playing the Piano and Suona", Hu and Suona imitate the sounds of many animals, such as cocks, hens and birds. There is also Mr. Ma Guanglu's "Full of Flowers in August", which uses the sound of percussion music such as gongs and cymbals to set off the atmosphere of the song and instantly push the song to a climax. There are many songs that imitate sounds, so I won't list them with you here. There is also the double-string playing technique of Luohu, because Luohu plays the strings separately, so one string can be accompanied and the other string can be played. This is unmatched by other ethnic groups.