Ancient Indian immigrants occupied Hainan.

Ancient Vietnam was divided into two parts, Da Yue in the north and Champo in the south. At the same time, to the west of Champa are Khmer (in modern Cambodia, historical names include Funan and Zhenla). Historically, Champa often fought wars with Da Yue and Khmer, which eventually led to the weakness of its national strength. In the late15th century, it was defeated and became a vassal of Da Yue.

Champo is a Brahmin religion with a deep Indian degree and caste system. Champa became a tributary country of Viet Nam in the late15th century, but in the17th century, the expression of its customs and names was still strongly influenced by Indians. It was not until the Xishan Dynasty in the late18th century that the factors of Brahmanism began to fade in the historical records. As for the history of Champo in 19 10, Champo has completely become a mixed area of Buddhism and Confucianism, just like North Vietnam.

As early as the end of the 7th century, Arab businessmen had already arrived in the coastal areas of Southeast Asia. In 674 AD, Arab colonies appeared in the coastal areas of Sumatra, but this is not enough to explain why the islands in Southeast Asia finally converted to Islam, while the Indo-China Peninsula did not convert to Islam except for the late Shiva. Of course, don't be too religious.

During the 7th-17th century, the civilization development of the Islamic world was in the forefront of the world. The introduction of Islam was accompanied by the introduction of a set of values, lifestyles and technologies, which undoubtedly improved the civilization level of the indigenous people who converted to Islam at that time.