Video: 0195_forge_steel_1
Phase transition: twist
State before: solid:non_particulate:flexible body
State after: solid:non_particulate:flexible body
Object: In the process of forging the steel, the steel and the debris which is falling off in the initial frame
目标物体: 在锻造钢铁的过程中，位于初始帧中钢铁以及上面掉落的碎屑