to write a letter (to the authorities) / to present a petition
上访
shàng fǎng
to seek an audience with higher-ups (esp. government officials) to petition for sth
告退
gào tuì
to petition for retirement (old) / to ask for leave to withdraw / to ask to be excused
群体性事件
qún tǐ xìng shì jiàn
mass incident (PRC term for incidents of social unrest, including rioting, melees and petition campaigns)
刘晓波
Liú Xiǎo bō
Liu Xiaobo (1955-2017), Beijing writer and human rights activist, organizer of petition Charter 2008 零八憲章|零八宪章[Ling2 ba1 Xian4 zhang1], Nobel Peace Prize laureate in 2010
零八宪章
líng bā xiàn zhāng
Charter 08, PRC pro-democracy petition of December 2008
消除饥饿请愿- 10亿人在挨饿
Petition to End Hunger - 1 Billion Hungry Campaign / 1 billion hungry Petition to end Hunger