Jia Chending refers to the date of birth, that is, the year, month, day and hour of this person's birth are expressed by the dry branch method.
Universiade refers to the officials who have once every ten years since the delivery, and the Universiade is once every ten years.
The 9-year-old Universiade was sent at the age of 9 for the first time, 19 for the second time, 29 for the third time, and so on.