The government of Qingdao in China has said it will invest more than £2.5bn (29bn yuan) in its subway construction.
The State Council has given the green light for work to commence on the project, which is expected to be completed before 2016.
As part of the work, 54.7 km mileage of subway line will be constructed, improving transport links in downtown and some suburban districts.
However, in total 231.5 kilometres of line will be built for eight subway lines.
The investment is part of China’s 11th Five-year plan period (2006-2010) to invest £17.8bn (200bn yuan) in urban public transport construction, taking the total mileage of subway and light track in the mainland cities to more than 1,500 km in 2010.
Between 2010 and 2015 a further 65 urban rail lines will be built, with a total length of 1,700 km.