Who is the little girl in He Weigui's public service advertisement?

Meng Wa, the protagonist of the series of public service advertisements of "Chinese Dream and Dream", advocates "serving the country and the people, being kind to the soul, being diligent-oriented, being frugal and nurturing morality, being sincere and believing, putting filial piety first and valuing harmony".

Harmony is the most important thing: everything is handled according to etiquette, that is, all kinds of important relationships between people can be just right and can be properly mediated, so as to be harmonious with each other.