This is the most important sentence:

"Now I believe a truth that it become like it when you stay with something longer time even if you dislike it at first."

I think what you are trying to say is: "Now I understand the truth of the proverb that says if you disklike something at first, give it time and you will come to like it."

My school

Last year I graduated from Shanxi agriculture University majoring Information management and information system.I don't like the school and the major at first because it isn't my dream school.In spite of beautiful campus and friendly schoolmate,I can't become interested to it.Four years passed away quickly,I suddenly become be reluctant to leave this school especially the good memory that left my mind . Everytime I heard or saw any information related to our school ,I want to look at them back . Now I understand the truth of the proverb that says if you disklike something at first, give it time and you will come to like it.