Beijing urged New Delhi on Wednesday to stick to the one-China principle and respect China's core interests, following a rare visit by a delegation of Taiwan politicians to the Indian capital.

China firmly opposes all forms of official contacts and exchanges between Taiwan and countries that have diplomatic ties with China, Foreign Ministry spokesman Geng Shuang told a regular news conference.

China hopes that India will stick to the one-China principle and handle issues related to Taiwan prudently, he said, adding that China has lodged a protest with India on the issue.