I have a kitten that has just been born for two days, it's really cute!

I have a stray kitten.
Because my kitten is too small to feed, I feel sad for a while.
I don't want to hurt this. How can I feed it?
Does my kitten need to take a shower?
I dare not wash it, afraid to freeze it.
What should I eat?
How to feed?
consult!
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