Chess in China 1998. Karpov's second visit took him to Beijing, Shenyang, Shanghai and Guangzhou – four of the five largest cities in China. He also took the opportunity to launch the Chinese edition of his book "Disney's Guide to Chess" and appeared to autograph his books at major bookstores in each city he visited. There were 20,000 copies for the first printing and more than half were sold within one week of his visit. Karpov played a total of five exhibitions and once again, the immense publicity raised the interest of chess to another level. At present, in terms of media publicity,
Water supply and sanitation in China built in the city of Nanjing. Subsequently, China engaged in what is possibly the largest wastewater treatment investment program in history. It has been estimated that in 2006 there was sufficient capacity to treat 52% of municipal residential wastewater. According to the State Environmental Protection Agency the rate of urban wastewater treatment reached 57% in that year. The government's goal to achieve a level of 60% for treatment of municipal wastewater by 2010 was surpassed. By 2010, 77.5% of domestic waste water was treated. Between 2001 and 2004, the number of cities that charge wastewater tariffs has increased from 300