Thanks to excellent comprehensive strength, especially advantage on urban size index and freight index, Qingdao ranked 9th in the list of 2015's best cities for business on the Chinese mainland, according to a report recently released by Forbes China.

The 2015 ranking still saw a strong presence of cities located in the eastern region. Developed regions including the Yangtze River Delta, Pearl River Delta and the Beijing-Tianjin-Hebei region claim 48 spots totally.

According to the report, this year's ranking was the 12th of its kind and evaluated 100 cities on the Chinese mainland according to eight business criteria, including labor index, urban size, spending power, passenger transport, freight, private economy, operational cost and innovation capacity.