None

I traveled to another county/city for the interview, but they could not explain things clearly and kept insisting that I agree to attend classes.

They also asked me to leave my Line contact information...

I left in the afternoon after attending the class.

It was not educational training at all; they simply had someone hand out lecture notes.

They just made us memorize things by rote...

Absolutely terrible...

Also, leaving my Line contact information was useless. They never replied no matter what I asked.

What they said on-site was unclear, and they kept talking to me about dust mites.

I had not even understood the machine yet, and they were already talking about dust mites...

They even said, “What if I get cancer?” (Is that something an interviewer is supposed to say?)

They even used profanity.

How can a company like this have an interviewer like that?

Ridiculous...

Absolutely terrible.

The interviewer’s surname seems to be Du.