Xi Jinping (; Chinese: Xi Jin Ping ; pinyin: Xi Jinping; born 15 June 1953) is a Chinese politician currently serving as General Secretary of the Communist Party of China, President of the People's Republic of China, and Chairman of the Central Military Commission. As Xi holds the top offices of the party, the state, and the military, he is sometimes referred to as China's "paramount leader"; in 2016, the party officially gave him the title of "core" leader.

Xi was appointed to the nine-man Politburo Standing Committee of the Communist Party of China at the 17th Party Congress in October 2007. Xi was ranked above Li Keqiang, an indication that he was going to succeed Hu Jintao as China's next leader. In addition, Xi also held the top-ranking membership of the Communist Party's Central Secretariat. This assessment was further supported at the 11th National People's Congress in March 2008, when Xi was elected as Vice-President of the People's Republic of China.  Following his elevation, Xi has held a broad range of portfolios. He was put in charge of the comprehensive preparations for the 2008 Summer Olympics in Beijing, as well as being the central government's leading figure in Hong Kong and Macau affairs. In addition, he also became the new President of the Central Party School of the Communist Party of China, the cadre-training and ideological education wing of the Communist Party. In the wake of the 2008 Sichuan earthquake, Xi visited disaster areas in Shaanxi and Gansu. Xi made his first foreign trip as vice president to North Korea, Mongolia, Saudi Arabia, Qatar and Yemen from 17 to 25 June 2008. After the Olympics, Xi was assigned the post of Committee Chair for the preparations of the 60th Anniversary Celebrations of the founding of the People's Republic of China. He was also reportedly at the helm of a top-level Communist Party committee dubbed the 6521 Project, which was charged with ensuring social stability during a series of politically sensitive anniversaries in 2009.  Xi is considered to be one of the most successful members of the Crown Prince Party, a quasi-clique of politicians who are descendants of early Chinese Communist revolutionaries. Former Prime Minister of Singapore, Lee Kuan Yew, when asked about Xi, said he felt he was "a thoughtful man who has gone through many trials and tribulations." Lee also commented: "I would put him in the Nelson Mandela class of persons. A person with enormous emotional stability who does not allow his personal misfortunes or sufferings affect his judgment. In other words, he is impressive". Former U.S. Treasury Secretary Henry Paulson described Xi as "the kind of guy who knows how to get things over the goal line." Australian Prime Minister Kevin Rudd said that Xi "has sufficient reformist, party and military background to be very much his own man." Former US Secretary of State Hillary Clinton tweeted, "Xi hosting a meeting on women's rights at the UN while persecuting feminists? Shameless."

Using a quote from the above article, answer the following question: What did he also control
Xi also held the top-ranking membership of the Communist Party's Central Secretariat.