化异类以复仇，来自佛经故事的基本艺术机杼。

This source comes from the artistic technique of Sutra stories.

当黑线断开，织工就应审视整块织物，他也应检查机杼。

And when the black thread breaks, the weaver shall look into the whole cloth, and he shall examine the loom also.

这一“倒叙式”机杼并非如通常所认为的是独创，而有着文学史渊源。

This narration mode of flashback is not an original creation people usually think but has its historical origins of Literature.