The hardware was moved simultaneously by road and rail by the western theatre command that handles, among others, border issues with India, the reports said.
The report said it would take the PLA only six to seven hours to move "tens of thousands of tonnes" of military equipment from northern Tibet, where most of the material has been kept, to the Sikkim border in view of the efficient transportation networks which include the Tibet railway and a new expressway connecting Lhasa to Yadong on China's side of Nathu La in the Sikkim section.
On Monday, China's state news agency, Xinhua, said India's "trespass into Chinese territory is a blatant infringement on China's sovereignty". The location was not far from the scene of faceoff between the Indian and Chinese forces.
Mr Ni Lexiong, a Shanghai-based military commentator, was quoted as saying the movement was most likely related to the standoff and could have been created to bring India to the negotiating table. "Diplomatic talks must be backed by military preparation", Ni Lexiong, a Shanghai-based military commentator, was quoted as saying by the Post.
Anti-China sentiments are rising in India with an upsurge of nationalism ever since the election of Prime Minister Narendra Modi, said China's state-run Global Times in an article.
There has been no "unusual movement" to indicate any mobilisation of Chinese troops in the last few months, says an assessment done by India's security establishment in the wake of a month-long military standoff between the two countries.More news: Ed Sheeran denies quitting Twitter because of 'Game of Thrones' backlash
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Reinforcing the western front with personnel and hardware makes it much easier for commanders to defend Chinese borders, Wang Dehua of the Shanghai Institutes for International Studies told LiveMint on Wednesday.
Chinese and Indian soldiers have been locked in a face- off in the Dokalam area of the Sikkim sector for over a month after Indian troops stopped the Chinese army from building a road in the disputed area.
Since 2009, China has been conducting a trans-regional support operation - an annual exercise for movement of supplies and logistics, government sources said.
China wants India to withdraw its troops from Doklam before the two sides can open talks.
"I know that the U.S. is concerned about the ongoing situation there", State Department spokesperson Heather Nauert told reporters at her daily news conference on Tuesday.