TOKYO, July 12, 2016 (Xinhua) -- Yasuo Fukuda, former Japanese prime minister, speaks at a forum commemorating the 150th birth anniversary of Sun Yat-sen, in Tokyo, Japan, July 12, 2016. A forum commemorating the 150th birth anniversary of Sun Yat-sen, a great forerunner of China's democratic revolution, was held in Tokyo Tuesday, with a number of celebrated politicians and scholars from China and Japan attending. (Xinhua/Ma Ping)