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
Route 13 (Laos) Route 13 (Laos) Route 13 is the most important highway in the country of Laos. It begins at Boten in the North of Laos at the Chinese border. It connects the city of Vientiane to Luang Prabang in the north and roughly follows the line of the Mekong River down to the border with Cambodia. The road then continues at National Highway 7 in Cambodia. Also this national highway leads past all three international airports in Laos Vientiane Airport, Luang Prabang Airport and Pakse Airport. Between Boten and Nateuy the Route 13 is at a length of 20 km part