物化

xī zhě zhuāng zhōu mèng wéi hú dié zhōu yù hú dié zé bì yǒu fēn yǐ cǐ zhī wèi wù huà

昔者庄周梦为蝴蝶周与蝴蝶则必有分矣。此之谓物化。

In the past, Zhuang Zhou's dream was a butterfly, and there must be a difference between Zhou and butterfly. This is called materialization.