It was under the effective jurisdiction of China without any dispute.
A spokesperson of the Ministry of Home Affairs (MHA) said the government has no intention of slowing down on giving security clearance to Chinese companies in the wake of the latest border row near Sikkim.
His comments came after weeks of saber-rattling in New Delhi and Beijing, as officials from both sides talk up a potential clash even bloodier than their 1962 war that left thousands dead. Under Chinese leader Xi Jinping, China has been more assertive in insisting neighbours accept Beijing's "zone of influence". "As we all know, in the 1950s China, India and Myanmar proposed the Five Principles (Panchsheel) of co-existence", the foreign ministry spokesman said.
There have been 19 rounds of talks under the Special Representatives mechanism since 2003.
India has opposed China's road construction in Doklam, which is a disputed territory between Thimphu and Beijing.
"Although the boundary between the two countries is yet to be settled but we have basic consensus on the boundary and there is no dispute between both of us that Doklam belongs to China", he said. Yet India also formally joined the Russian and Chinese-dominated Shanghai Cooperation Organization this year alongside Pakistan.
Last month China began building a road on territory also claimed by Bhutan, a move seen as upsetting the status quo.
While pilgrims have been turned away at Nathu La, the other pilgrimage route to Kailash Mansarovar is still operational, officials said.
Since then, videos have emerged of Indian and Chinese soldiers blocking each other with their arms and physically jostling without coming to blows.
While interacting with the media the Chinese ambassador to India Luo Zhaohui reiterated that Indian troops should "unconditionally pull back to the Indian side". "This time, we must teach New Delhi a bitter lesson." notes China Daily in its editorial.
"We believe the Chinese People's Liberation Army (PLA) is powerful enough to expel Indian troops out of Chinese territory".
Meanwhile, the more mainstream China Daily suggested that some in the Indian military were seeking payback for the 1962 war. "The Indian military can choose to return to its territory with dignity, or be kicked out of the area by Chinese soldiers." reads a quote from the editorial published in Global Times. Although China and Bhutan have spent decades negotiating the precise border without serious incident, the tiny Himalayan kingdom sought help this time from its long-time ally, India, which sent troops onto the plateau.
"Before the stand-off, an Indian military leader said they are ready for the "2.5 front war", and after that, another leader claimed "today's India is not the India of 1962". There is thus no dispute regarding the boundary of Sikkim with the Tibet region", Nehru said. "In fact, Chinese maps show sizeable areas of Bhutan as part of Tibet", Nehru said in the letter accessed by PTI here.