There is no in-security feeling of China. It's their dirty games with Pakistan which is irritating.
Anyway No need to worry, China's economy will be choked to death & it has already started. They are in deep debts. The west & especially America will stop most of its chinese cheap imports & pull out investments from China under Trump. The oil will be kept low, so all these oil rich countries don't have money to lavishly throw money on chinese products. It's already working including Russia feeling the heat of low oil prices. If all these doesn't work towards the collapse of the Chinese economy, America will attack China sooner or later. Let Trump settle down.
Anytime this attack can kick off, Ideally, I am predicting after re-election of Modi for 2nd term as PM in 2019, America will definitely attack China. Japan, Vietnam, Australia & Taiwan will ally America to take down China. If Russia interferes the Ukraine & NATO forces would enter. If N Korea interferes S Korea will enter.
India doesn't have to do anything to China except giving intelligence sharing support to the US & Japan, unless China launches an attack at our border or territory in this war. China will surely perish or will be taken 100 years behind. Main outcome out of the war is China will be broken into pieces, so as to not have access to India or Middle East. India will get back Kashmir & occupied territories of Arunachal.
Tibet will either be independent or they will vote to be part of India or Dalai Lama will suggest people to vote for India, to avoid any future Chinese oppression. Tibetians already live happily in India & all of them love & have huge respect India. If you ask them are you Indian, they will proudly say yes I am.
Xin Jiang will be cut off along with Hong Kong & Macau. Don't worry, this will happen in our life time, I feel definitely before 2026, No need to wait long also, it's just around the corner.