Chongqing，China

Lanhai expressway connects lanzhou city of gansu province and haikou city of hainan province, with a total length of 2,570 kilometers, two-way four lanes and a design speed of 120 kilometers per hour. Lanzhou - longnan - guangyuan - nanchong - wusheng - chongqing - qijiang - zunyi - guiyang - duyun - hechi - nanning - qinzhou - beihai - zhanjiang - haikou and other cities.

Longnan LanHai highway section is the national high speed highway in gansu province lanzhou to haikou in highway network planning is an important part of, and prudent in sichuan, chongqing, guizhou and other provinces and cities in gansu province is the south exit road. The above figure shows the section of the G75 lanhai expressway through the mountains and forests of chongqing's banan district, which is in harmony with the natural environment.