看看看看不透摸摸摸摸不着
[kàn kàn kàn kàn bù tòu mō mō mō mō bù zhe]
The repetition emphasizes a feeling of ambiguity and intangibility regarding someone or something - you feel like you cannot see through the person's real thoughts or intentions and can't really touch or grasp anything about them, implying emotional distance and vagueness.