The disproval method is a method to prove the authenticity of the topic indirectly by first determining the falseness of the topic that contradicts the original topic, and inferring the truth from the false according to the law of exclusion. According to the above definitions, which of the following is not a contradiction law? ['Mr. Feng Shui used to say empty, the guide refers to the north and west, if there is really a tiger land, why not bury him in the year.', "A person has a crime of illegal income. If he is not guilty, he can tell all the sources of his income, and he can't tell these sources of income.", 'The ancient village is still useful, if it is not useful, it will not exist until now.', 'Planning cannot be free to do what you want, because planning passed by law has the legal effect.']