On 14 March 2014, Indonesian President, Susilo Bambang Yudhoyono, signed a presidential decree (Keputusan Presiden) No. 12/2014, to change the legal use of Indonesian language term to refer China. Changes including to replace the term Cina or China to Tiongkok to refer China as a country, and Tionghoa to refer Chinese people, or Chinese descents. This change was meant to eradicate discrimination and prejudice towards Chinese Indonesians.
No it's just they use the word Cina and always talk bad about them! They have other words for the Chinese which are rude and so do the Chinese for the locals. They rightly or wrong have grudges against each other. The Chinese some what have the unfair end of things but they both treat each other poorly in their own way. The Chinese sadly face violence they should not.
If you want to be polite it's Zhongguo for China and Zhongguoren for Chinese person.