Expressway densityTIANJIN Municipality in North China now leads the country in terms of expressway density, with six expressways totaling 305 km in length at a density of 2.56 km per 100 square km.Wetland protectionA MEMORANDUM on wetland protection has been signed between the World Wide Fund for Nature (WWF) and Central China’s Hubei Province. The signing of the memorandum Tuesday marks the start of cooperation between the two sides in protecting the abundant wetland resources in Hubei Province, located in the middle of the Yangtze River and famous for its thousands of lakes, said WWF official James Harkness.AnniversaryRETURNED overseas Chinese, Chinese historians and legal academics met in Beijing Tuesday to mark the 57th anniversary of China’s victory over Japan, the day Japan’s official surrender ended World War II. The China Memorial Hall on the War of Resistance against Japanese Aggression has been named one of 20 educational bases for the All-China Federation of Returned Overseas Chinese (ACFROC).Richest peopleTHIRTEEN Asians, of them eight from China, were ranked in “40 of the richest people under the ageof 40” list compiled by US business magazine Fortune, the magazine said here yesterday.A similar list has been compiled in the United States since 1999, but this is the first time that Fortune compiled an international list.Richard Li, Chairman of Hong Kong’s media-based Pacific Century Group and son of Asia’s richest man Li Ka-shing, ranked No. 10 andwas worth 1.6 billion US dollars. Another two billionaires, from Japan and India respectively, were also listed in the top ten.