Weiyuantang Introduction:Weiyuantang is located in the northeast corner of Shanhaiguan City. It is far opposite the Jingbian Tower located in the southeast corner of Shanhaiguan City. It was built in the 44th year of the Jiajing reign of the Ming Dynasty (1565) by the principal Sun Yingyuan on the site of the corner tower, and now only the ruins remain.