This will be the fourth visit of Modi to China after he came to power in 2014.
The two countries also held 11th Joint Economic Group meeting and the fifth Strategic Economic Dialogue (SED) here recently.
It was followed by two meetings between National Security Advisor Ajit Doval and his Chinese counterpart Yang Jiechi and the visit early this year by Foreign Secretary Vijay Gokhale to Beijing. Ms Sitharaman, who will be in Beijing for a Shanghai Cooperation Organisation meeting on April 24, is expected to take this conversation further with her Chinese counterpart. "As it directly affects lives of people living there, we welcome this", Sushma said.
The informal summit is being seen as a move by the two countries to get their ties back on track following the Doklam stand-off previous year, wherein troops from the two nations were engaged in an eyeball-to-eyeball standoff near Sikkim border between June to August.
The two leaders will meet one-on-one, without any ministers or advisers, and the summit aimed to redefine the future relationship of the two countries, according to Indian media reports.
"This year, under the guidance of our leaders, the China-India relationship has realised good development and shown a positive momentum", Wang said. Swaraj said as part of the preparatory discussions for the Modi-Xi summit, she and Wang noted with satisfaction the progress made in ties since their last meeting in December in New Delhi. This was Swaraj's first meeting with Yi after the latter was her first since the Chinese Foreign Minister was elevated to a more powerful position in the Chinese political establishment.
Sushma Swaraj said that Modi and Xi would have communications of a strategic nature.
The sharing of hydrological data is crucial to predict floods in India's northeast region, prone to natural calamities.
PM Modi is scheduled to visit Qingdao in north-eastern China, near the Korean peninsula, in June for the 2018 Shanghai Cooperation Organisation (SCO) summit.
Wang was in March promoted to China's top diplomatic post of State Councillor. Today's meeting between Swaraj and Wang was part of efforts by the two countries to step up the pace of high-level interactions to improve relations.
This is the first meeting of the group after India and Pakistan were admitted into the SCO previous year.
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