Amid the ongoing border stand-off in Sikkim, China has issued travel advisory to its citizens in India asking them to pay a close attention to personal safety.

"Chinese embassy issues notice to Chinese nationals in India, asking them to pay close attention to personal safety, local security situation," reported China's People's Daily.

The notice was issued by the Chinese embassy in New Delhi on July 7.

On Friday, in significant diplomatic gestures, Prime Minister Narendra Modi and Chinese President Xi Jinping shook hands, greeted each other, swapped praise and had a conversation on a wide range of issues at an informal meeting of the BRICS nations in Germany's Hamburg.

Recently, the state-run Chinese media also said that India must be taught a 'bitter lesson' and warned New Delhi that a military conflict with China would inflict 'greater losses than in 1962'.

"We have to tell India that the Chinese look down on their military power. Jaitley is right that the India of 2017 is different from that of 1962 - India will suffer greater losses than in 1962 if it incites military conflicts," it said.

Virtually threatening to fan strong anti-India movements in Bhutan and Sikkim, the Chinese state media had also said that Beijing should reconsider its stance on Sikkim's independence

China and India have been engaged in the standoff in the Doklam area near the Bhutan tri-junction for almost a month after a Chinese Army's construction party attempted to build a road.

Doka La is the Indian name for the region which Bhutan recognises as Dokalam, while China claims it as part of its Donglang region.

Of the 3,488-km-long India-China border from Jammu and Kashmir to Arunachal Pradesh, a 220-km section falls in Sikkim.