万马齐喑

wàn mǎ qí yīn

thousands of horses, all mute (idiom); no-one dares to speak out

an atmosphere of political oppression

wàn

ten thousand

abbr. for Malaysia 馬來西亞|马来西亚[Ma3 lai2 xi1 ya4]

(name of states and dynasties at several different periods)

yīn

mute