Foreign ministers from India and China have held talks in New Delhi, aimed at further developing relations, just prior to three nation talks that will include Russia.
On Wednesday the three countries are expected to discuss regional issues, such as terrorism, drug trafficking and the situation in Afghanistan, Iran, Iraq and North Korea.
The trilateral relationship between India, China and Russia was first proposed by Yevgeny Primakov, the former Russian prime minister, during a visit to New Delhi in 1998.
Li Zhaoxing, the Chinese foreign minister, arrived in New Delhi on Sunday to meet Pranab Mukherjee, his Indian counterpart, for discussions on increasing air links and the easing of visa rules between the world's two most populous countries, an Indian foreign ministry official said.
Li and Mukherjee, were also expected to discuss a boundry dispute that led to a border war in 1962, the official said.
A formal ceasefire line was never established after the war but the border between China and India has remained mostly peaceful after agreements were signed in 1993 and 1996.
Last year, during a visit by Hu Jintao, the Chinese President, the two sides agreed to give priority to a resolution of the border row.
Li and Mukherjee will be joined by Sergei Lavrov, Russia's foreign minister, on Wednesday.