China is about 10 km from its perception, India is about 30 km from its perception. to be specific. Keep in mind we are talking about differing perceptions of the lac. The full extent of China's claims aren't clear.Indeed and LAC as a working concept has disintegrated in Depsang ( for the time being).
As China is just a couple of odd kilometers away from its Claim line and India is 20 some km away from even its LAC. What use is the concept anymore?
At Depsang, the patrolling points are a little away from the perceived LAC like in other areas, and this is called the limit of patrolling. Soldiers don’t go beyond the points, even though the LAC is still ahead.
"However, Depsang is an area where the perception of the LAC is starkly different between China and India. According to locally established agreements, both sides were allowed patrolling until certain areas that fell into individual perceptions of the LAC, but sources said the practice “came under stress” after the Doklam stand-off of 2017.
“The Depsang issue is different from the current stand-off that is taking place between India and China. The Chinese have been blocking India’s patrol from bottleneck area to PP 11, PP12, PP12 A and PP 13. This has been happening from before the current tensions at LAC,” a source in the know said.
Another source said that Indians, too, have blocked Chinese patrols in the Depsang. However, this is because the Chinese perceived LAC is beyond the Bottleneck area (around 18-20 km from LAC) and just 1.5 km from Burtse, where the Chinese reached their claim line in 2015 during Chinese President Xi Jinping’s India visit."