The wave of collapse of communism in Eastern Europe and the dissolution of USSR is dubbed "the Soviet East Wave" (which also puns with the alias of Su Shi, a poet and politician in the Sung dynasty).
Examples (Wiktionary)
Mandarin
据说在1990年成立全苏东干族协会时，吉尔吉斯斯坦南方的奥什回回因为不会讲陕甘宁方言而嚎啕大哭，痛惜自己丢失了母语。
據說在1990年成立全蘇東干族協會時，吉爾吉斯斯坦南方的奧什回回因爲不會講陝甘寧方言而嚎啕大哭，痛惜自己丟失了母語。
jù shuō zài １９９０ nián chéng lì quán sū dōng gān zú xié huì shí ， jí ěr jí sī sī tǎn nán fāng de ào shén huí huí yīn wèi bù huì jiǎng shǎn gān níng fāng yán ér háo táo dà kū ， tòng xī zì jǐ diū shī le mǔ yǔ ．
It is said that during the 1990 formation of the All-Soviet Dungan Association, Hui of Osh in southern Kyrgyzstan cried most terribly, unable to speak their Shaan-Gan-Ning dialect, lamenting the loss of their native language.