dāo guāng jiàn yǐng
lit. flash of knives and swords (idiom)
fig. intense conflict
刀
dāo
knife; blade; single-edged sword; cutlass (CL:把[ba3])
光
guāng
light; ray (CL:道[dao4])
剑
jiàn
double-edged sword
影
yǐng
picture