When I suddenly saw the winning information, I looked at it curiously and filled in my personal information. The next day, an anonymous person called me and said I needed a handling fee.

Hello, I will answer your questions as follows:

You don't have to worry, the situation you mentioned is not in conformity with the conclusion of the contract and the entry into force of the contract stipulated in China's contract law, so there is no creditor-debtor relationship between you and the other party, and there is no handling fee. This is generally a scam, just ignore it.

You can refer to the following provisions of the contract law:

Article 12 The contents of a contract shall be agreed upon by the parties, and generally include the following clauses:

(1) The name and domicile of the party concerned;

(2) Subject matter;

(3) quantity;

(4) quality;

(5) Price or remuneration;

(6) Time limit, place and method of performance;

(7) Liability for breach of contract;

(8) Methods for resolving disputes.

The parties may conclude a contract by referring to the model texts of various contracts.

Article 13 The parties shall conclude a contract by means of offer and acceptance.

Article 14 An offer is an expression of intention to conclude a contract with another person 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 15 An invitation to offer is an expression of intention to expect others to make an offer to themselves. Sent price list, auction announcement, tender announcement, prospectus, commercial advertisement, etc. It's an invitation to offer.

If the content of a commercial advertisement conforms to the provisions of the offer, it shall be regarded as an offer.

Article 16 An offer takes effect when it reaches the offeree.

If a contract is concluded in the form of data message, and the addressee designates a specific system to receive the data message, the time when the data message enters the specific system shall be regarded as the arrival time; If the specific system is not specified, the time when the data message first enters any system of the addressee shall be regarded as the arrival time.

I hope the above answers can help you and be adopted by you.