The current Philippine Bai legal guest was formerly the state of sudulu. In the Ming Dynasty, the ancient state of Sulu started close and friendly exchanges with China. In 1417, in the 15th year of Yongle reign of the Ming Dynasty, three kings of Sulu islands, Badu gebela, the eastern king, Maha gebadin, the Western King, and Badu gebelab, the king of Dongwang, led a delegation of 340 people to China for a friendly visit. They were warmly received by Zhu Di, emperor of Yongle of the Ming Dynasty, and had a pleasant visit for 27 days. When he left, Emperor Yongle conferred three kings gold, silver, jade belt, brocade and silk, and sent commissioners to return to the country along the Beijing Hangzhou Grand Canal. However, unexpectedly, King Su Lu was ill on his way home from Shandong. He died in Dezhou on September 13, 1417. After hearing the obituary, Emperor Yongle deeply mourned, so he sent the Minister of rites to Dezhou with a memorial message. The emperor's posthumous title "GONGDING" buried the East King with the ceremony of vassal king. Du Mahan, the eldest son of the East King, led his followers to return home to inherit the throne. The princess Ge Mu Ning, his second son wenhala, his third son andulu and more than ten attendants stayed in Dezhou to guard the tomb. Since then, in China's land, there has been this unique foreign king's tomb. In 1713 ad, in the ninth year of Emperor Yongzheng of the Qing Dynasty, according to the request of the descendants of Dongwang to naturalize in China, he wrote to the Qing court and designated Wen and an to be naturalized in China, becoming a member of the great Chinese nation. The descendants of Dongwang have been handed down to 21 generations.