1. On the one hand, counter-offer refers to the act of accepting the original offer after the offeree expands, restricts or changes it.

2. On the other hand, a counter-offer means that the offeree raises an objection to the received offer or substantially changes the original offer, which cannot be regarded as an acceptance, but the counter-offer is also called a new offer.

legal ground

Article 472 of the Civil Code

An offer is an expression of intention to conclude a contract with others and shall meet the following conditions:

Specific content;

(2) The offeror is bound by the expression of will by indicating that he has accepted the offer.

Article 479

Acceptance is the expression of the intention of the offeree to agree to the offer.