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 Zhang owed him a huge favour for saving his brothers' families in Chang'an and also because he thought that Liu Zhang deeply trusted him. It turned out that Liu Zhang gradually distrusted Pang Xi and began to alienate him. Around 211, when Liu Zhang's adviser Zhang Song urged his lord to invite another warlord Liu Bei into Yi Province to counter the threat posed by Zhang Lu, he warned Liu Zhang that Pang Xi might secretly harbour the intention of overthrowing him. In 214, after Liu Bei seized control of Yi Province from Liu Zhang, he appointed Pang Xi as