Zheng Jianzhong. Zhangjiagang Xuesitang Education and Training Center Co., Ltd. was established on July 5, 20 19, and its registered place is in Gangcheng Avenue, Zhangjiagang City. According to official website, Zhangjiagang Xuesitang Education and Training Center Co., Ltd., Zheng Jianzhong is the principal of Zhangjiagang Port School, born in June 1967, a senior physics teacher in middle school, and a leader of education and scientific research in Zhangjiagang City. The business scope includes extracurricular tutoring in primary schools, junior high schools and senior high schools.