It's hard to sing alone
It's a Chinese idiom. Pinyin is n á nm í NGG ū zh ǎ ng, which means that it's hard to do things because of its weak power. It's from Xia Wai Yao Xie · current affairs · Liu Yongfu.
The origin of Idioms
Ping Buqing of Qing Dynasty wrote in xiawai Jixie · current affairs · Liu Yongfu: "in the dynasty, if you are not an upright minister, you can't agree with him, but when you don't know him, you can't be alone."
Idiom usage
Used as a predicate, an object, or an attribute.
It's hard to sing alone
Three commandments for gentlemen - jūn zǐ sān jiè
blow on an instrument or finger a stringed instrument - pǐn zhú tiáo sī
hire personnel on the basis of their abilities - liàng cái lù yòng