actually our north side of border with tibbet is great Himalayas part....where mostly 3000-7500 meter heights mountain present. so its very very hard to cross it. from there we never face any invasions in thousands of years nd even in 1962 war. chinese never crossed from that area. even if they succesful, they cant bring much food nd weapons/ammunition with them. nd for their welcome at border ITBP present in old routes.
there r no roads (building from 7-8 years

) there yet...when our tribes went to tibbet border areas for business before 1962 war. they take 4-5 days by foot to reach tibbet border business areas. if chinese dare to cross it, it will be first time in history.
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