No this is not harsh conditions, they say that armies did the handfight and pelted stones.
I read that they used wooden sticks with nails in them, sounds pretty medieval to me. So even if the injuires obtained are not deadly, withouth getting proper help and protection from the harsh conditions in those altitudes, it must be horrible.
China claimed 43 casualties, but how many of those actually died is not stated.
https://www.indiatoday.in/india/story/india-china-face-off-ladakh-lac-chinese-casualties-pla-1689714-2020-06-16But don't forget, the region China is actually occupying was part of Tibet, another expansionary war of China in the past.