yǒng zhēn gé xīn
Yongzhen Reform, Tang dynasty failed reform movement of 805 led by Wang Shuwen 王叔文[Wang2 Shu1 wen2]
永
yǒng
forever
贞
zhēn
chaste
革
gé
animal hide
新
xīn
abbr. for Xinjiang 新疆[Xin1 jiang1]