"Looking forward to visiting China from 14-16 May to strengthen friendship between our two ancient civilisations and the two largest developing countries," Modi, who will be making his first trip to China as PM, wrote on the Chinese microblog that has over 500 million users.
The Prime Minister, who has a hectic schedule in China, said he was eagerly awaiting his visit.
"Eagerly awaiting my visit to Xi'an, Beijing and Shanghai and my productive discussions with President Xi Jinping and Premier Li Keqiang," he said in another post.
"Warmly recall my conversations with President Xi Jinping and his invitation to visit Xi'an in his home province; looking forward to visiting this historic city associated with Xuan Zang (famous Chinese Buddhist scholar) and his journey to India in his quest for knowledge," he said.
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In New Delhi, the External Affairs Ministry later came out with a statement announcing Modi's three-nation six-day trip that will take him to China, Mongolia and South Korea.
"In China, Prime Minister will visit Xi'an, Beijing and Shanghai from May 14-16, 2015. He will hold bilateral meetings with China's leadership and participate in cultural and business events.
Indian associations in different Chinese cities have sent out invitations to their members to take part in the event at Shanghai, the financial hub. This is the first time an Indian leader will be addressing such a meeting in China.
According to official estimates, about 45,000 Indians, mostly professionals, businessmen and students currently stay in China.