Vietnam coastline is long. At its narrowest point in the central Quảng Bình Province, the country is as little as across, though it widens to around in the north. Vietnam's land is mostly hilly and densely forested, with level land covering no more than 20%. Mountains account for 40% of the country's land area, and tropical forests cover around 42%. The northern part of the country consists mostly of highlands and the Red River Delta. Fansipan (also called as Phan Xi Păng) which is located in Lào Cai Province is the highest mountain in Vietnam, standing high. The Red River Delta
Pang Xi and Guo Si, the warlords controlling the Han central government and the figurehead Emperor Xian. However, Ma Teng lost the battle and both Liu Fan and Liu Dan were killed. At the time, as Pang Xi was a family friend of Liu Yan, he turned to his network of friends for help in helping Liu Fan and Liu Dan's families escape from Chang'an (the imperial capital under Li Jue and Guo Si's control) and bringing them safely to Yi Province, thus preserving Liu Yan's posterity. Following Liu Yan's death later in 194, his youngest son Liu Zhang succeeded him as