《新五代史·世家·吴世家第一》
十六年，徐温请求杨隆演登皇帝位，没有应许，又请求登昊王位，纔准许，于是建立国家，改换年号，拜徐温焉大丞相、都督中外诸军事，封为东海郡王。
十六年，温请隆演即皇帝位，不许，又请即吴王位，乃许，遂建国改元，拜温大丞相、都督中外诸军事，封东海郡王。
In the sixteenth year, Xu Wen asked Yang Longyan to ascend to the throne, but Longyan refused. Xu Wen then asked him to assume the title of Prince of Hou, to which Longyan agreed. Therefore, Xu Wen established a state, changed the reign title, and granted himself the titles of Great Minister and Chief Commander of Military Affairs in the Interior and Exterior. He also gave himself the title of Prince of Donghai.