西北望,射天狼 is a poetry phrase stemming from the works of Qu Yuan, a 3rd century BC Chinese poet. The full phrase is 会挽雕弓如满月,西北望,射天狼 which translates to "Pulling the (carved) bow like a full moon, looking westwards, shooting at Sirius". The original meaning means to punish corruption, but during the Jin Dynasty the Sirius star became associated with foreign invaders and by the time of the Song Dynasty this poem's meaning had changed to fighting foreign invaders.
西北望,射天狼 is a poetry phrase stemming from the works of Qu Yuan, a 3rd century BC Chinese poet. The full phrase is 会挽雕弓如满月,西北望,射天狼 which translates to "Pulling the (carved) bow like a full moon, looking westwards, shooting at Sirius". The original meaning means to punish corruption, but during the Jin Dynasty the Sirius star became associated with foreign invaders and by the time of the Song Dynasty this poem's meaning had changed to fighting foreign invaders.
"西北望, 射天狼" was written by Su Shi from Song Dynasty, 11th centery AD, although its orginal allusion is from Qu Yuan's work "长矢兮射天狼".