On Monday, China had objected to Sitharaman's first visit to the border state on Saturday and Sunday, saying her tour of the "disputed area" was not conducive to peace in the region.
India had rejected Beijing's objection and asserted that Arunachal Pradesh is an integral part of the country.
"What is the problem? There is no problem. It is our territory, we will go there," she said in a reply to a query on China's reaction on her visit to Arunachal Pradesh.
Sitharaman had visited forward army posts in remote Anjaw district of the state bordering China to take stock of defence preparedness.
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