From September 8th to Septemebr 10th, all the teachers that hold a teacher's qualification certification can enjoy free entrance to discovery Land. Foreign teachers can use a teacher's certificate issued by your school.

9月8日-9月10日所有教师持本人教师资格证（外籍教师凭学校颁发的教师证即可）享受免费畅玩发现王国！

See original link here (Chinese ver.)

原文链接（中文版）