Southeast Asian Massif (Pearl River). In China, the Massif includes extreme eastern Tibet, southern and western Sichuan, western Hunan, a small portion of western Guangdong, all of Guizhou and Yunnan, with north and west Guangxi. Spilling over the Southeast Asian peninsula, it covers most of the border areas of Burma with adjacent segments of northeastern India (Meghalaya, Mizoram, Manipur, Nagaland with portions of Arunachal Pradesh and Assam) and southeastern Bangladesh, the north and west of Thailand, all of Laos above the Mekong valley, borderlands in northern and central Vietnam along the Annam Cordillera, and the northeastern fringes of Cambodia. Beyond the northern limit
National Highway 7 (Cambodia) about US$80 million, was officially inaugurated on 29 April 2008. National Highway 7 (Cambodia) National Highway 7 or National Road No.7 (10007) () is one of the national highways of Cambodia. With a length of 509.17 km it connects Skuon with Trapeang Kreal, international border checkpoint with Laos. It is part of Asian Highway Network and of the connection by road between Phnom Penh and Vientiane, joining Route 13 in Laos leading north along the Mekong to Luang Prabang. In November 2004 it was announced that the reconstruction of the road, assisted by the Chinese government, would be partly rebuilt