Indravarman VI

Indravarman VI, Ba Dich Lai, Chang-pa-ti-lai, Virabhadravarman, or Ngauk Klaung Vijaya was the son of Jaya Simhavarman VI. He took the name Indravarman when crowned in 1432. During his reign, the Vietnamese resumed their hostility and laid siege of capital Vijaya in 1403, where they faced defeat and were forced to leave after one month. Indravarman took advantage of declining Khmer Empire to fill up void by attacking Angkor territories, which led Cambodian king Ponhea Yat to seek intervention from the Chinese. In 1408 and 1414, Ming army from recent occupying Jiaozhi (former Dai Viet) poked into Champa and sent a threat to Indravarman, demanding him to cease hostility against Cambodia.

Despite that, in 1421 Indravarman invaded Cambodian territories in the Mekong Delta, and then annexed many parts of it, including the marketplace town of Bien Hoa, and offered a statue of Tribhuvanākrānta (Vishnu) there. That marked the southern most extent of Champa.[1][2]

In order to maintain Đại Việt neutrality, he gave up the important province of Indrapura.[3]^{: 238–239}[4] Maspero lists Nauk Glaun Vijaya as the son of Jaya Simhavarman VI, which may be the same individual, but states he did not assume his father's reign after his death in 1441. Instead, a nephew, Maha Vijaya, ascended the throne.[5]^{: 114–115}