万马齐喑

thousands of horses, all mute (idiom); no-one dares to speak out / an atmosphere of political oppression

used in 万俟[Mo4 qi2]

surname Wan

ten thousand / a great number

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

horse / CL:匹[pi3] / horse or cavalry piece in Chinese chess / knight in Western chess

(name of states and dynasties at several different periods) / surname Qi

neat / even / level with / identical / simultaneous / all together / to even sth out

mute