On the basis of coordinating the sources of history materials from Vietnam and China, together with the latest archaeological achievements of Ho citadel, the article has delineated territory, confirmed the chronology frame with the Kings of this kingdom in relation to post-Champa Empire. It is from the aftermath of Vijaya, the two parts of Aryaru (Phu Yen) and Kauthara (Khanh Hoa) belong to Hoa Anh Kingdom, in which, Le Thanh Tong is crowned as Ban La Tra Duyet; the rebellion of this King is the cause for the second conquest, formally taking Ling Chan/ Da Bia as the landmark; Trai A Ma Phat Am is designated as Hoa Anh’s King on the remaining land of Kauthara, but immediately incorporated into Panduranga, forming the state of post-Champa.