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 De of a Secondary Marquis (關內侯) to each of Pang De's four sons and gave them each 100 taxable households as their marquisates. The names of Pang De's sons were not recorded in history, except for one – Pang Hui (龐會). Pang Hui resembled his father in personality and served as a general in the Cao Wei state. The highest position he reached was Commandant-General of the Capital (中尉將軍). He was also enfeoffed as a marquis. The "Shu Ji" (蜀記) recorded that he participated in the conquest of Wei's rival state, Shu Han, in 263. After the fall of Shu, he