别以为有个铁塔就是埃菲尔
[bié yĭ wéi yŏu gè tiĕ tă jiù shì āi fēi ĕr]
The phrase humorously indicates not to judge something by its appearance alone; having an 'iron tower' doesn’t necessarily mean it’s the Eiffel Tower, implying one should look deeper beyond superficial resemblance.