In case China makes this mistake of all out war along LAC from Kashmir to Sikkim, this will be their biggest mistake that will haunt their generations in future.
1. In case of an all out war, we don't restrict to defend a particular region or a few hundred kilometres. We aim at capturing Askai Chin, capturing Laddakh, capturing further areas beyond Arunachal Pradesh, capturing more areas beyond Doklam Plateau. Our JCOs and local commanders will make Chinese shiver.
2. Chinese have one child policy. The more the Chinese are killed, more families will lose their only child. It will lead to massive protests in China. Chinese soldiers seeing the brutality of Indian soldiers will shiver and will leave their posts and hardware for Indian forces to capture their bases and use them.
3. Japan, Vietnam, and other allied countries with see this as an opportunity to destroy Chinese build-up in SCS islands.
4. Fire of freedom will spread like wildfire in Hong Kong and other provinces of China including Xinhua.
5. In case China threats with nuclear weapons, U.S. will jump in and train all it's nuclear missiles on China.
I can see the downfall of China very clearly if they make a mistake of even firing a first single bullet. War will not remain limited only a a particular region. It will spread like a wild fire. I can hear large number of Chinese families crying for losing their only sons just to appease communist party.