Muslims in the country account for about 86% of the country’s population, and belong to the country with the largest Muslim population in the world. Rich in natural resources, the world's largest coal export volume and palm oil production, tin production world second, and rice production world third. The official language of Indonesia is Indonesian, and most intellectuals use English as the main language, while Chinese mostly use Chinese or Taiwanese or Hakka. The Indonesian Constitution guarantees the freedom of belief of the people. Therefore, Islam is not a state religion. Muslims in the country account for about 86.1% of the country’s population, Christians about 5.7%, Catholics about 3.3%, and Hindus about 1.8% (Bali Island) Residents mostly believe in Hinduism) and Buddhists account for about 1%.