Google China has confirmed with local media that the company has started to place outdoor advertisements in subway and bus areas in Beijing and Guangzhou.

The company previously tried the outdoor advertisements in several cities in southern China.

So far, Google's advertisements have entered Beijing's subway line 1, Guangzhou's subway line 1, and more than 150 bus stops in Beijing to promote Google China's mobile search product and to guide users to use Google's search services, covering map, news, weather, and restaurants.

According to various statistical studies, Google usually ranks second, far behind rival Baidu.com, as the most popular search engine in China.