2017-09-05
Duan Weihong went missing from her Beijing office a few weeks after Sun Zhengcai was brought down, with her executives and assistants disappearing simultaneously, and was subsequently detained by the CCP Central Commission for Discipline Inspection.
2017-07
In July 2017, Sun Zhengcai was suddenly investigated and expelled from the CCP. He and Hu Chunhua were once seen as candidates for the sixth-generation leadership; his downfall marked a turning point for the succession plans Hu Jintao had left for himself.
2001
Duan Weihong began befriending Sun Zhengcai, then-Party Secretary of Beijing's Shunyi District, in 2001, laying the foundation for her future political connections.