Sitharaman then asked the soldier "What would you say in Chinese?"
Two short videos of the meeting were posted on the minister's official Twitter account on Sunday. "Video released by the Indian Defence Ministry shows that she acknowledged the soldiers with a traditional namaste greeting", it said.More news: Clinton weighs in on Weinstein sexual harassment allegations
On Sina Weibo, the Chinese microblogging site, a user called Tu Yueyue wrote, "The Indian woman defence minister directly faced the tough border problem".
Nirmala Sitharaman took to Twitter to share a post showing her waving at Chinese troops, who were taking pictures of her from across the border.
The greeting "sent a goodwill signal towards mending bilateral ties and putting relations back on track toward normality", Qian Feng, an expert at the Chinese Association for South Asian Studies, told the Party-run Global Times newspaper.
In her address, Sitharaman said the devolved powers given to the Service Chiefs should be fully utilised for achieving their capabilities. The Defence Minister said keeping the morale of the forces high at all times was a top priority for Prime Minister Narendra Modi's government.More news: Firefighters stress having a plan during National Fire Prevention week
However, recent reports say that only India withdrew its troops while a large number of Chinese soldiers are still present in Doklam and also constructing a road. Friendly cooperation is the best option, strategic exhaustion the worst.
Incidentally, Sitharaman was scheduled to undertake an aerial survey of the Doklam region and forward border posts in Sikkim during her visit to Nathu La.
Lt Gen Krishna briefed her about the Army's security preparedness along the India-China border.
She visited the area amid reports that China strengthened its military presence at the Doklam Plateau and even started widening an existing road - around 12 km from the area of the conflict.More news: Padmavati Trailer Stuns Karan Johar, Anushka Sharma, Hrithik Roshan