What is Ma Xinying?

Ma, president of Suning "hardcore". In Suning County, there is such a middle school principal. In addition to being busy with the administrative affairs of the school, she insists on writing letters to students. In the past year, she wrote more than 500 letters to students, encouraging them to study hard and make continuous progress. This principal is Ma, the principal of Beijing Sino-German Suning Experimental School.