Chinese President Xi Jinping on Sunday instructed officials to expedite the construction of the new USD 47.8 billion railway project connecting the country's southwest Sichuan province to Linzhi in Tibet close to the Indian border in Arunachal Pradesh, saying it would play a key role in safeguarding stability in the border areas.

The Sichuan-Tibet Railway will be the second railway line into Tibet after the Qinghai-Tibet Railway project. It will go through the southeast of the Qinghai-Tibet Plateau, one of the world's most geologically active areas, according to the Chinese official media.