During Galwan episode, India officially declared that it lost 20 soldiers. Whether they were lost in himalayas or killed in combat, if it happened during the conflict & in the combat zone, the enemy will claim credit for the killing. And rightly so.China didn’t kill 20 Indian soldiers. I would say a China kill 3 or less Indian soldiers. Himalayas killed 20+ Indian soldiers. Blame India for lack of preparation to conduct operations in Himalayas, causing unnecessary Indian death.
This is why Chinese casualties should be 3 or less as well. As likely none die because of the elements.
But the point of discussion is not China. Your fellow countrymen have declared right here on this forum that "Chinese killed 20 with bare hands and lost none". Please stick to expected lines. China & India will fight & resolve & fight & resolve. But some will Cheer & Claim & Cheer & Claim & Cheer & Claim. No surprises on that please.