Only the debtor's signature on the bill of lading can prove that the debtor has received the goods, but it cannot prove whether the other party has paid for the goods. The parties may ask the other party for payment by telephone recording, and find a witness to record the goods. If the other party admits the money owed, there is a chance of winning; If the other party denies paying the debt, the winning rate is low.

When the other party sues for arrears, it also needs to collect relevant evidence to prove the amount of arrears. Write a complaint and bring your ID card to the people's court of the other party's domicile or the place where the project is located. Execution after the judgment takes effect.

Article 21 of the Civil Procedure Law of People's Republic of China (PRC) shall be under the jurisdiction of the people's court of the defendant's domicile. If the defendant's domicile is inconsistent with his habitual residence, it shall be under the jurisdiction of the people's court of habitual residence.

A civil lawsuit brought against a legal person or other organization shall be under the jurisdiction of the people's court where the defendant is domiciled.

Where the domiciles and habitual residences of several defendants in the same lawsuit are under the jurisdiction of two or more people's courts, they shall be under the jurisdiction of each people's court.

Article 63 Evidence includes:

(a) Statements of the parties;

(2) Documentary evidence;

(3) Physical evidence;

(4) Audio-visual materials;

(5) Electronic data;

(6) Testimony of witnesses;

(7) Appraisal opinions;

(8) Records of the inquest.

Evidence must be verified before it can be used as a basis for ascertaining facts.

Article 121 A complaint shall contain the following items:

(1) The name, sex, age, nationality, occupation, work unit, domicile and contact information of the plaintiff, the name and domicile of the legal person or other organization, and the name, position and contact information of the legal representative or principal responsible person;

(2) Information such as the name, gender, work unit and domicile of the defendant, and information such as the name and domicile of the legal person or other organization;

(3) the request and the facts and reasons on which it is based;

(4) Evidence and its sources, names and residences of witnesses.