"Happy Teacher's Day" in Engpsh.
Teacher's Day is a special day to celebrate and honor teachers, usually celebrated on various dates around the world. In some countries, it is celebrated on October 5th to commemorate the birthday of a famous educator, while in others, it may be celebrated on different dates with different themes.
Examples:
"Wishing you a Happy Teacher's Day!"
(祝你教师节快乐！)
"Thank you for all that you do. Happy Teacher's Day!"
(感谢您所做的一切。教师节快乐！)