Show off the whole class of scumbags, you call this the head teacher

Lu Ze, the head teacher of the reborn waste wood class, got the [Super Hardcore Teacher System].
Lu Ze: It's the first time we meet, so let's make a group with the monitor, let's join together.
Monitor: Good Mr. Lu.
next second.
Lu Ze: Come on, these 25 students who have joined the group, hand in your mobile phones.
This teacher, so bad?
Again.
Lu Ze: Come on, everyone read together with me, grow stronger and stronger, and never change your heart.
All the students: grow old and strong
Lu Ze: poor and...hi, siri
Siri: Hello, I am here.
Lu Ze: Just made a sound, hand in your phone.
He is the devil and the best teacher.