"Unity Is Strength" (simplified Chinese: 团结就是力量; traditional Chinese: 團結就是力量; pinyin: Tuánjié jiùshì lìliàng) is a Chinese patriotic song written by Mu Hong and Lu Su in June 1943. Despite being written as the finale act to an opera of the same name, the song gained popularity as a standalone anti-Japanese propaganda piece, and soon became widely used among numerous Chinese guerrilla groups, most notably the Chinese Communist Party. The song remains a popular patriotic song today, and in an online poll hosted by the State Administration of Press, Publication, Radio, Film and Television in 2015, Unity is Strength was voted among the top ten songs of the Second Sino-Japanese War.[1]