Video: 0076_assemble_puzzle_2
Phase transition: merge
State before: solid:non_particulate:rigid body
State after: solid:non_particulate:rigid body
Object: In the process of assembling the puzzle, the brown puzzle piece which is being held by the right hand in the initial frame
目标物体: 在拼图过程中，位于初始帧中右手所握住的棕色拼图块