The Ngô dynasty was a dynasty in Vietnam. Around the year 930 AD, as Ngô Quyền rose to power, northern Vietnam was militarily occupied by Southern Han and was treated as an autonomous province and vassal state of China and was referred to as Giao Chỉ . Every year the Lord Protector of Giao Chỉ had to pay tribute to China in exchange for peace and political support. Beginning of the 10th century, China was domestically plagued and weakened by internal civil war during what is known as the Five Dynasties and Ten Kingdoms Period. The emperor of China was... preoccupied with these civil struggles and lost their grip on Giao Chi periodically. Giao Chỉ took advantage of this opportunity and proclaimed its independence and susceded from China. Under the rule of Lord Protector Dương Đình Nghệ, Giao Chi state initiated a full blown military campaign for independence. Dương Đình Nghệ , 937–938 was the self-appointed Lord Protector around 930.
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