"Top Nine" refers to the training course for Deyun students. Deyun Society enrolls a group of students every year in different periods, the first of which is the first nine periods. "Attempted" means no success.
And "He Jiuhua" refers to He Jiuhua, a comedian of Deyun Society. He entered Deyun Society earlier, but he failed to inform the teacher, so he failed to become a member of the "Top Nine".
Therefore, "He Jiuhua failed in the first nine days" can be understood as the first nine days of Deyun Society. He Jiuhua was not informed in time and failed to attend this training course, so he failed.