It's free, but it will be deducted from your salary when you leave after half a year. If you are sure that the other company is true and legal, the recruitment information is true and reliable, and the offer given to you is true and correct, it is recommended to call the other person, who knows best and is willing to explain.

This is their job, they have the responsibility to explain, and they are the most accurate. Other people's statements are not credible, and employees may not be completely clear. But as far as your words are concerned, it seems that the other party may be under the banner of recruitment, but it is actually a black shop that charges you training fees. This is illegal.