China's leaders: What you need to know
China's Party Congress normally convenes once every five years, but this year it's attracting particular attention as it will oversee a once in a decade leadership transition.
The man widely tipped to lead China for the next 10 years, 59 year-old Xi Jinping, is expected to be formally endorsed as party general secretary along with his team.
BBC Chinese's Weiliang Nie explains about the Party Congress meeting, and the men waiting to lead China.