We did not interfere with the sovereignty of India. We built roads in our OWN territory.
Whereas India interfered with our sovereignty, they hosted our largest separatist group after a failed violent uprising, and they put military posts inside Chinese sovereign soil. In the Eastern sector where they didn't even claim any land, in pure undisputed Chinese territory.
India started the Sino-Indian War with the Forward Policy, after rejecting Zhou Enlai's FAIR offer of a trade of recognition between AP and Aksai Chin.
Not to mention that India helped the CIA interfere in Tibet from air bases within India during the 1960's, as declassified a while back.
Nehru allowed flights of US spy planes over Tibet, border areas: declassified CIA document - India TV News