Why do legal notices have to be sent to friends?

The legal notice will be sent to my friends, but I can't be contacted.

According to the provisions of Article 25 and Article 26 of the Contract Law, the acceptance notice takes effect when it reaches the offeror, and the contract is established when the acceptance takes effect. For example, if a tenderer sends a bid-winning notice to the winning bidder, it will cause the legal relationship to take effect.

According to the provisions of Article 96 of the Contract Law, the other party shall be notified when claiming to terminate the contract, and the contract shall be terminated when the notice reaches the other party. For example, if the other party's breach of contract triggers the termination clause, the contract will not be automatically terminated, and the observant party needs to express it by notice.