Load Mortar装填臼炮 enables allied Mortars臼炮 right next to the Engineer工程师 to use their Fire Mortar发射臼炮 skill, can't be used when engaged in melee
Behavior
Engineers are required for Mortars臼炮 to fire. However they don't always spawn next to them and will waste time moving. They are often left unguarded. They can not load mortars if engaged in melee.
Tips
Snipe them if you don't want Mortars to fire.
Footwork灵活步法 allows brothers to escape explosions even if engaged in melee.