Reliable. Gu Yanan is a professional dubbing. I have been engaged in dubbing for many years, with a first-class Mandarin, and now I dub two programs of Zhejiang TV Station. He once worked as a channel dubbing for FM stations such as Jinan Radio Station, Shijiazhuang Radio Station and Fuzhou Radio Station, and was a senior dubbing teacher of Shanghai Literature and Art Network. Her dubbing works and courses have become demonstration cases of dubbing teaching in major universities. She has been engaged in art examination education and training for many years, and has sent many talents to national key art colleges. Gu Yanan's dubbing courses all come from this place, which is very reliable. Moreover, the online course of Gu Yanan's audio language classroom she founded covers systematic courses such as scientific vocalization, reading aloud and commercial dubbing. , and provide a platform for systematic learning for enthusiasts and related personnel.