Changde is a prefecture-level city in the northwest of Hunan province, People's Republic of China, with a population of 5,717,218 inhabitants as of the 2010 census of whom 1,232,182 reside in the urban are as of Dingcheng and Wuling Districts. In addition to the urban districts, the prefecture-level city of Changde also includes the city of Jinshi and six counties. Changde is adjacent to Dongting Lake to the east, the city of Yiyang to the south, Wuling and Xuefeng Mountains to the west, and Hubei to the north.The area has been inhabited by humans since around 8,000 years ago. In that time, the city has changed names several times, but it has been known as Changde since the twelfth century. The city is well known for the Battle of Changde during the Second Sino-Japanese War and the atrocities committed then by the Imperial Japanese Army.In the past decade, the city has seen a massive construction boom. New highrises have sprung up, roads were rebuilt and new schools, parks and museums have opened. Locals and tourists often visit the Changde Poetry Wall, covered in a variety of poems mostly from ancient China. The wall stretches for 3 kilometres along the Yuan River downtown and functions as a flood wall. It is listed in the Guinness Book of World Records as the longest wall with engraved arts in the world. Changde Walking Street is a pedestrian-only retail and entertainment area with karaoke bars, cinemas, as well as many shops and restaurants.