Is it playable at high level?

Occasionally seen as a surprise; against prepared opponents the slow build-up is hard to justify.

Mandarin Duck Cannons (Yuan Yang Pao)

炮二平五，马八进七，炮八退一

A rare, tricky cannon system where both cannons are manoeuvred to meet on the same flank, confusing opponents with unusual piece coordination.

Mandarin Duck Cannon is an ambush system — it looks passive then suddenly both cannons strike. Best as a surprise weapon.

Black answers 马8进7 + 马2进3.

Black rushes 车9平8 to exploit the slow build-up.

Is it playable at high level?: Occasionally seen as a surprise; against prepared opponents the slow build-up is hard to justify.

Central Cannon 炮二平五 Identical Cannons (Shun Pao) 炮二平五，炮8平5 Cross Cannons (Lie Pao) 炮二平五，炮2平5 Cross Palace Cannon (Guo Gong Pao) 炮二平六