Sun Zhengcai

During the investigation, Sun was said to have informed on a number of high-ranking officials in Chongqing, causing unprecedented fallout on the megacity's political scene shortly prior to the 19th Party Congress. While the municipality held elections for delegates to the congress in May, by the time a final list of delegates were released in late September, as many as 14 out of 43 of the initially selected list were surreptitiously removed, including five members of the municipal party standing committee. Mostly prominently, Chongqing party organization head Zeng Qinghong (not the former Vice President) was believed to be held for investigation.

On February 13, 2018, Sun was charged of bribery by the People’s Procuratorate of Tianjin. He was pleaded guilty to corruption charges at the Tianjin First Intermediate People's Court on April 12, 2018. Sun was sentenced to life imprisonment on May 8, 2018 for bribery worth 170 million yuan.

Sun was abruptly removed from office in July 2017 and put under investigation by the Central Commission for Discipline Inspection (CCDI). The CCDI accused him of political and criminal wrongdoing, and he was expelled from the Communist Party of China. He was convicted of bribery and sentenced to life imprisonment in 2018.

In February 2017, Sun's fate seemed to take a fatal turn. Inspection teams under the auspices of the Central Commission for Discipline Inspection released a report announcing that Chongqing had not done enough to excise its political scene from the influence of Bo Xilai and Wang Lijun, and that "party leadership had weakened". This was seen as an oblique criticism of Sun's own management of the party organization. It was the first blot on Sun in an otherwise steady term in Chongqing. In May, Sun took the opportunity at the municipal party congress to laud Xi as the party's leadership core, and declare his intentions to resolutely stamp out the influence of Bo Xilai and Wang Lijun. In June 2017, Chongqing police chief He Ting was removed from office. He Ting and Sun were from the same area of Shandong province.

On July 15, 2017, party authorities announced that Sun was to be replaced in his post as party secretary of Chongqing by Chen Min'er, who was propaganda chief in Zhejiang when Xi Jinping was provincial party secretary there. The meeting to announce the event had been called abruptly, and Sun himself was not present at the handover ceremony; there was no mention of his record in Chongqing, either, as was customary for major transition meetings. Curiously, footage of Sun also appeared to be deliberately cut from Xinwen Lianbo coverage of the National Finance Work Conference - a meeting attended by all Politburo members. These signs were taken as a political death knell for Sun.

On July 24, 2017, the Central Commission for Discipline Inspection announced that Sun was undergoing investigation for violating party discipline. The announcement marked the first time that a sitting Politburo member was investigated by the CCDI since Xi Jinping assumed power as General Secretary of the Communist Party of China at the 18th Party Congress. Before Sun, the last incumbent Politburo member subject to investigation was Bo Xilai (also then serving as Chongqing party secretary) in April 2012. Sun was the fourth sitting Politburo member investigated after 1990 - following Chen Xitong, Chen Liangyu, and Bo Xilai; all of them were party chiefs of direct-controlled municipalities.

Prior to his downfall, political observers generally saw Sun as being groomed for a higher leadership position due to his relative youth and the diversity of his experiences; he had even been characterized as a potential successor to Xi Jinping. The announcement of the investigation into Sun in July 2017 essentially put an end to his political career. Prior to the announcement of the investigation, Sun (along with Hu Chunhua) were seen by political observers as having almost certainly secured further advancement at the upcoming 19th Party Congress. Sun's departure seems to have upset the carefully calibrated conventions from previous administrations and made the congress more open-ended than would have otherwise been.

On September 29, 2017, the Central Commission for Discipline Inspection, with uncharacteristic zeal, announced the results of the disciplinary case initiated against Sun, merely two months after he was formally placed under investigation. The commission accused Sun of "wavering in his ideals and beliefs, turned his back against the party's mission and values, failed to maintain a proper political stance... violated political discipline and political rules, violated the Eight-point Regulation, bathed in pomp and circumstance and belief in his special privileges; violated organizational discipline, practiced favoritism, and leaked organizational secrets." It added that Sun also sought illicit gain for relatives and took valuable gifts directly or through appointed persons.

Sun was a member of the 17th Central Committee of the Communist Party of China and, until his expulsion, a member of the 18th Central Committee.

In November 2009, Sun was named party secretary of Jilin province, in northeast China. In November 2012, after the 18th CPC National Congress, he was appointed a member of the Politburo and replaced Zhang Dejiang as party chief of Chongqing. The post in Chongqing had emerged as one of the most important regional offices in China, and Sun's assuming the reins in the interior municipality signaled that he was likely destined for even higher office. It also demonstrated the trust that the central leadership placed in Sun, as Chongqing had only a month earlier weathered a political storm with the attempted defection of police chief Wang Lijun and the ouster of party chief Bo Xilai. Since the 1990s, regional leadership tenures were seen as important stepping stones to eventual national leadership.

Sun was the youngest member of the 18th Politburo of the Communist Party of China, and the fourth sitting Politburo member to be expelled from the party since 1990. Prior to his fall from grace, Sun was once considered to be a leading candidate for a top leadership position in the "6th Generation of Chinese leadership".

Sun joined the Communist Party of China in July 1988. In 1997, he was named governor and Deputy Communist Party Secretary of Shunyi County in rural Beijing. Shunyi was then converted from a county to an urban district; Sun continued to serve as district governor. In February 2002, he became the Party Secretary of the Shunyi District. Shortly thereafter, in May 2002, Sun unexpectedly defeated then municipal propaganda department head Jiang Xiaoyu in a municipal party committee election to earn a seat on the municipal Party Standing Committee, ascending to sub-provincial ranks at the mere age of 39. He was elevated to become secretary-general of the Beijing party organization from 2002 to 2006, in December 2006, he was appointed as Minister of Agriculture as nominated by Premier Wen Jiabao. At age 43, Sun was one of the youngest State Council ministers at the time.

Sun Zhengcai (Chinese: 孙政才 ; born September 25, 1963) is a former Chinese politician and senior regional official. From 2012 to 2017, Sun served as the Communist Party Secretary of Chongqing, an interior municipality, and a member of the Politburo of the Communist Party of China. Prior to that, he served as the Party Secretary of Jilin province, and Minister of Agriculture of China.

Sun was born to a family of farmers in a village located near the city of Rongcheng, Shandong province in September 1963. In 1980, Sun was admitted to the Laiyang Agricultural College (now Qingdao Agricultural University). After obtaining a bachelor's degree, he pursued post-graduate work at the Beijing Agriculture and Forestry Institute and the China Agricultural University, where he obtained master's degrees in agronomy. After completing his academic work, he remained at the institute to conduct further research and eventually obtained positions as an administrator, rising to become executive vice president of the institute, in charge of its day-to-day work.