jiǔ yī bā shì biàn
the Mukden or Manchurian Railway Incident of 18th September 1931 used by the Japanese as a pretext to annex Manchuria
also known as Liutiaogou incident 柳條溝事變|柳条沟事变
九
jiǔ
nine
一
yī
one
八
bā
eight
事
shì
matter
变
biàn
to change