New Delhi/Beijing: India on Wednesday outrightly rejected as "vain and preposterous" China renaming some places in Arunachal Pradesh and said such attempts will not alter the "undeniable" reality that the state "was, is, and will" always remain an integral part of India.

New Delhi's reaction came in response to Beijing announcing Chinese names for 27 places in Arunachal Pradesh, including 15 mountains, four passes, two rivers, a lake and five inhabited areas. China claims Arunachal Pradesh as part of southern Tibet.