The Indian and the Chinese armies are moving in heavy equipment and weaponry including artillery and combat vehicles to their rear bases close to the disputed areas in eastern Ladakh.
The two sides remain engaged in a standoff along the troubled region for over 25 days, military sources said on Sunday.
The development in the region has been taking place even as as both countries are engaged in dialogue at military and diplomatic levels to resolve the dispute.
The Chinese Army has been gradually ramping up its strategic reserves in its rear bases near the Line of Actual Control or LAC in eastern Ladakh by rushing in artillery, infantry combat vehicles and heavy military equipment, sources were quoted as saying in reports.
The Indian Army has also been moving in additional troops as well as equipment and weapons like artillery to aggressively match up to the Chinese build-up, they said.
Meanwhile, it is learnt that the Indian Air Force (IAF) has been keeping a strict aerial surveillance in the disputed region.
A sizeable number of Chinese Army personnel entered into the Indian side of the de-facto border earlier this month and have been camping in Pangong Tso and Galwan Valley since then.
The Indian Army fiercely objected to the transgressions by the Chinese troops and demanded their immediate withdrawal for restoration of peace in the area.
The Chinese Army has ramped up their presence in Demchok and Daulat Beg Oldie too – the two sensitive areas with a history of skirmishes involving the two sides.
The Chinese Army is learnt to have deployed around 2,500 troops in Pangong Tso and Galwan Valley, besides gradually enhancing temporary infrastructure and weaponry. However, there is no official figure about the numbers.
Sources were quoted as saying satellite images have captured significant ramping up of defence infrastructure by China on its side of the de-facto border including construction activities at a military airbase around 180 km from Pangong Tso area.
The assessment by the Indian Army is that the build-up is aimed at putting pressure on India.