It can be: a tooth for a tooth, an eye for an eye, playing tricks on others, treating others in their own way, tit for tat

Fighting fire with fire

Titting with others The Tao will also be given to the other person

Don't give in even an inch

Repay will be rewarded

Praises include: reciprocating favors, reciprocating courtesy, exchanging what is needed, what is not, and learning from each other's strengths