Notice means: in the form of written notice, it is a formal or informal warning or informing behavior of something when it is delivered to the notified person. For the notifying party, it is a unilateral expression of will, which only has an explanatory effect on the other party and has not yet produced legal effect.
However, if the notified party accepts or performs the matter in accordance with the notice, it has the effect of contract and law.
According to the general principle of contract law, the conclusion of a contract should go through two procedures: offer and acceptance. The so-called "offer" is the expression of intention to conclude a contract with others. The so-called "acceptance" means that the offeree agrees that the contents of the offer are expressed by the intention of forming a contract. The acceptance notice takes effect when it reaches the offeror, and the contract is established.
According to the provisions of the Contract Law, the notice belongs to the "offer" in legal attribute, and the addressee clearly indicates that it is a promise to the offer when it is executed according to the notice. At this time, the notice has the effect of contract and is legally binding on both parties.