A person that is usually by some way chinese, that has a very high intellect. It has probably a higher IQ than a Big brain 10x.
This word is used when a chinese kid is smart for a chinese kid, because everyone know asian kids are automatically Big brain
Person number 1: Wow, how did Tobias get it all right?
Person number 2: Because he is China brain, bro.
TOBIAS
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TOBIAS THE ASIAN