Chinese doctor in the US

An Chinese Doctor can't find a job in a Hospital in the US so he opens a clinic and puts a sign outside 'GET TREATMENT FOR $20 - IF NOT CURED GET BACK $100

A American lawyer thinks this is a great opportunity to earn $100 and goes to the clinic...

Lawyer : "I have lost my sense of taste"

Chinese doctor : "Nurse, bring medicine from box no. 22 and put 3 drops in patient's mouth"

Lawyer : "Ugh..this is kerosene"

Chinese doctor : "Congrats, your sense of taste is restored. Give me $20"

The annoyed lawyer goes back after a few days to recover his money...

Lawyer : "I have lost my memory. I cannot remember anything"

Chinese doctor : "Nurse, bring medicine from box no. 22 and put 3 drops in his mouth"

Lawyer (annoyed) : "This is kerosene. You gave this to me last time for restoring my taste"

Chinese doctor : "Congrats. You got your memory back. Give me $20"

The fuming lawyer pays him, and then comes back a week later determined to get back $100.

Lawyer : "My eyesight has become very weak I can't see at all "

Chinese doctor : "Well, I don't have any medicine for that, so take this $100"

Lawyer (staring at the bill) : "But this is $20, not $100"

Chinese doctor : "Congrats, your eyesight is restored. Give me $20"