The college entrance exam also means the people on the test making and review committees finally can return home after more than five weeks in isolation.
More than 500 test makers and question reviewers have been staying together and creating the test at an undisclosed location.
They have also been disconnected from the world and been under heavy security for 36 days.
When the fifth part of the test starts, their electronic devices will be returned and they can go home.
Due to COVID-19, even tougher measures were imposed on them this year with medical personnel at the location.
While most of the system is secret, it's reported that their garbage, including food waste, is examined before being thrown away.