to cooperate on a great undertaking or joint project
Definitions (Wiktionary)
phrase, idiomatic
to assist one another in preparation for a grand occasion; to work together to complete a project
發生了大地震,大陸及港、澳、台三地藝人為了救災共襄盛舉,舉辦了多場演唱會。
发生了大地震,大陆及港、澳、台三地艺人为了救灾共襄盛举,举办了多场演唱会。
fā shēng le dà dì zhèn , dà lù jí gǎng , ào , tái sān dì yì rén wèi le jiù zāi gòng xiāng shèng jǔ , jǔ bàn le duō chǎng yǎn chàng huì . After the major earthquake, artists from the Mainland, Hong Kong, Macao and Taiwan all worked together to perform several concerts to collect funds for disaster relief.
Examples (粵典–words.hk)
Cantonese
共襄盛举
共襄盛舉
participate in a grand event together
Examples (Wiktionary)
Mandarin
发生了大地震,大陆及港、澳、台三地艺人为了救灾共襄盛举,举办了多场演唱会。
發生了大地震,大陸及港、澳、台三地藝人為了救災共襄盛舉,舉辦了多場演唱會。
fā shēng le dà dì zhèn , dà lù jí gǎng , ào , tái sān dì yì rén wèi le jiù zāi gòng xiāng shèng jǔ , jǔ bàn le duō chǎng yǎn chàng huì .
After the major earthquake, artists from the Mainland, Hong Kong, Macao and Taiwan all worked together to perform several concerts to collect funds for disaster relief.