《宋史·列传·卷二百一十六》
大中祥符四年，真宗临幸华阴，到云台观，参观陈抟的画像，免除云台观的田租。
大中祥符四年，真宗幸华阴，至云台观，阅抟画像，除其观田租。
In the fourth year of Dazhong Xiangfu, Zhenzong visited Huayin, went to Yuntai Guan, visited Chen Tuan's portrait, and exempted Yuntai Guan's tenure.