Trade changes Indo-Chinese relations
14 December 2010 Last updated at 15:26 GMT
India is preparing to welcome China's Prime Minister Wen Jiabao, who arrives in Delhi on Tuesday.
Historically, the China-India relationship has not been an easy one - they have fought a war, China has long been close to Pakistan, and the Dalai Lama has made his home in India.
However, rapidly growing trade ties are changing the dynamic - something very much in evidence in the eastern Indian city of Calcutta.
Chris Morris reports.