There is no time limit for the publication of papers. Generally, papers can only be published after qualification examination, that is to say, papers can only be published after admission, and the number of words is generally around 3000 words.

There is no contract or agreement, unless what you apply for is not officially run by the school, but an organization signs an agreement or a contract, a letter of guarantee and the like for you. However, I still didn't do well in this exam. The so-called organizational guarantee means that I will continue to take the exam this year, but next year, not that I passed it once. So I suggest you go to a regular school.