







师出无名 is a Chinese idiom (chengyu) meaning “to act without proper justification or a legitimate reason”. To dispatch troops without a just cause. Literally, “The army marches out without a name or justification”.
During the Chu-Han Contention, Liu Bang, taking advantage of Xiang Yu's expedition northward to attack King Tian Rong of Qi, crossed the Yellow River from Linjin, Shaanxi, and subjugated King Wei Bao. He then occupied Luoyang.
Dong Gong of Xincheng County advised him to find a legitimate reason for his military actions. He suggested that since Xiang Yu had killed Emperor Yi, Liu Bang should mourn for three days.
This move garnered support from various feudal lords who rallied behind Liu Bang. Consequently, Liu Bang successfully captured Pengcheng, the capital of Chu.

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Open the tool →师出无名 (shī chū wú míng) is a Chinese idiom (chengyu) meaning “to act without proper justification or a legitimate reason”.
师出无名 is pronounced shī chū wú míng in Mandarin Chinese.
Literally, 师出无名 means “the army marches out without a name or justification”. It is used to mean “to act without proper justification or a legitimate reason”.
师出无名 comes from a classical Chinese story dating back to ancient China. The full story is on this page.
师:军队;名:名义,引伸为理由。出兵没有正当理由。也引申为做某事没有正当理由。