You must never give money. You either don't sign it, or let the other party sign it first, sign it yourself, and then report the contract to the unit. (This kind of unit is suspected of cheating again)

The labor law stipulates that there is a special kind of training, which refers to professional training and is linked to liquidated damages, but the training fee is not paid.

Do nothing: it is illegal for workers not to pay the training fee of the employer, if they do.