URUMQI, Sept. 23 (Xinhua) -- Chinese President Xi Jinping on Tuesday arrived in Urumqi, capital of the Xinjiang Uygur Autonomous Region, to attend activities marking the autonomous region's 70th founding anniversary. As he descended from the ramp, Xi received flowers from children and was welcomed by songs and dances performed by people of various ethnic groups. Crowds lined the streets of Urumqi, waving red flags to welcome the convoy as Xi waved to the people through his open window. Xi is accompanied by Wang Huning, chairman of the National Committee of the Chinese People's Political Consultative Conference and head of the central delegation, as well as Cai Qi, director of the General Office of the CPC Central Committee. Both Wang and Cai are members of the Standing Committee of the Political Bureau of the CPC Central Committee.