As Durin had predicted, the magic army sent out troops to attack the front line of the garrison again. This time, they learned their lesson and opted for a night attack instead of charging in broad daylight to die.
Unfortunately, Durin had been fighting night battles daily with the Green-skinned Orcs in the Foresty Land recently, and the Changtangians weren't novices either — they had plenty of pressure-activated mines, which were buried in large quantities at the front line.
There were bunkers at the front and back of the trenches suitable for machine gun crews to move in, with the rear bunkers elevated above ground level.
Regarding flares equipped with parachutes and Floating Technique, machine gun belts with tracer bullets, and even flashlights, the Changtangians had everything.