Meaning of xùn:
xùn
训
Verb
to teach; to train; to admonish
Lǎoshī zhèngzài kètáng shàng xùndǎo xuéshēngmen.
老师正在课堂上训导学生们。
The teacher is instructing the students in class.
Noun
(bound form) instruction (from superiors); teachings; rule
Lǎoshī yángé de gěi xuéshēngmen jìnxíng xùnliàn.
老师严格地给学生们进行训练。
The teacher strictly conducts training for the students.