New Delhi, Mar 29: India has conveyed its unhappiness to China over the "flip-flop" and changes in the dates of meeting between commerce and industry minister Kamal Nath and his Chinese counterpart Chen Deming, scheduled for April 2.

Recently Kamal Nath called off his visit to China as the chinese government wanted to change the meeting date at the last moment. In a letter to Chinese ambassador to India, Zhang Yan, commerce secretary G K Pillai has pointed out the "flip-flop" and changes in the meeting dates of the two ministers.

"I have suggested that in future the meeting dates should be fixed on dates mutually convenient to the two ministers," Pillai said in his letter. Nath and Deming were scheduled to meet in Beijing on April 2, and attend the deliberations of the joint empowered group for reviewing the progress of the Regional Trade Agreement under negotiations.

Cancellation of Nath's visit to China came just few days after India's ambassador Nirupama Rao being summoned past midnight by Chinese foreign ministry conveying concerns over storming of its embassy by a group of Tibetan protesters in New Delhi.

Therefore, it was made out that Nath cancelled his visit to express Indian government's displeasure on the manner her ambassador was treated by Chinese government. Nath insisted that his trip to Beijing was cancelled due to problems with the dates, and not because of any diplomatic reasons.

"Some dates were fixed, they were changed, again fixed and again changed. My trip has been called off because of my engagement here and because of engagement of the Chinese minister," he had said on Thursday.