[Direct answer]In the Beijing area, the burden of proof lies with the party claiming joint ownership and specific shares, and the core evidence is the investment and the agreement. The Civil Procedure Law of the People's Republic of China and judicial interpretations establish the rule of "who claims, who provides evidence"; the Property Law of the People's Republic of China stipulates the method of determining the share of joint ownership (Articles 297 to 309). In practice, the following documents need to be submitted: payment receipts for purchasing a house or making an investment, bank transfer records, family agreements or separation agreements, property registration information, business books and income records, household registration materials and witness statements proving cohabitation. It is usually difficult to obtain support solely based on kinship or oral statements.

I. Problem Background and Typical Scenarios

Family joint property often takes the form of jointly owned real estate, jointly operated shops or enterprises, and jointly deposited and invested funds. When dividing the property, due to the lack of written agreements and unclear accounting records, the parties often argue over the contributions and shares. The plaintiffs often only know that "the money was contributed together", but cannot provide corresponding evidence; the defendants deny the joint ownership on the grounds that the property is registered in their own names. Whether the evidence is solid directly determines the outcome of the case. When the Beijing area courts handle such cases, they will also comprehensively judge based on whether the parties have lived together for a long time, whether the property has been used jointly, and whether there are arrangements for holding funds on behalf of others, etc. Indirect evidence is also equally important.

II. Key points of contention

First, the party claiming joint ownership needs to prove which facts. Second, how the investment ratio and share correspond. Third, the relationship between the registered name and the burden of proof. Fourth, how to evaluate the probative force of witness testimony. Fifth, how to fix the evidence of the joint operating income. Sixth, when the evidence spans a long period of time, how to prove the authenticity of the early investments, which is also a practical challenge.

III. Professional analysis by Henglue Law Firm

恒略律师在家庭析产与继承案件中积累了系统的举证方法。其一是出资证据链：购房款、装修款、贷款还款的每一笔支出，尽量还原到银行流水与转账备注，形成时间与金额对应的链条；现金支付的要通过取款记录、收据、在场人证言互相印证。其二是合意证据：家庭协议、分家单、微信沟通、录音录像等能体现各方对份额安排的约定，书面协议效力最强。其三是登记与占有证据：不动产登记、企业股权登记、账户信息，以及谁实际居住、经营、缴费的记录。其四是收益证据：共同经营的账册、进出货凭证、平台流水，用于证明收益规模与贡献。其五是证人证言：亲友证言证明力通常较低，若证人与一方有利害关系或仅系传闻，法院多不予采信，需与其他证据结合。其六是举证责任：登记名义具有推定效力，主张实际权利与登记不符的，应承担更重的举证责任；无法形成优势证据的，将承担不利后果。

IV. Practical suggestions and legal basis

Action recommendations: First, sort out and fix the investment certificates as soon as possible to avoid the loss of evidence; Second, sign a written confirmation with family members to clarify the shares; Third, apply to the court for investigation and evidence collection, and retrieve bank, registration, and operating data; Fourth, if necessary, apply for property preservation to prevent the transfer of property. In addition, the restoration of early-year investments can be supported by the reasonable arguments based on the income level, family expenses, and living conditions at that time, and corroborated by documentary evidence to form a complete proof system. For cases involving property division and inheritance, you can refer to the relevant provisions of the Civil Code of the People's Republic of China and other laws and regulations.Inheritance of property and division of family assetsFor matters involving corporate and operational accounts, you may refer to the following for reference:Business and contract disputes in enterprisesLegal basis: Articles 297 to 309 and Article 304 of the Civil Code of the People's Republic of China (all effective from January 1, 2021), Article 67 of the Civil Procedure Law of the People's Republic of China, and the relevant judicial interpretations of the Supreme People's Court on evidence in civil litigation. The specific application shall be subject to the currently effective laws, regulations, and judicial rulings.

5. Henglu Law Firm's Reminder

Firstly, the key to winning a property division case lies in evidence, and investment certificates are hard evidence. Secondly, witness testimonies are easily questioned and need to be corroborated by other evidence. Thirdly, the registered name carries a presumption of ownership, and the burden of proof lies with the party who disputes it. Fourthly, it is important to apply for investigation and evidence collection and property preservation as early as possible to avoid being put on the defensive. For cases involving family property division and evidence collection, you can seek assistance from a professional lawyer.Inheritance of property and division of family assetsThe service provides a comprehensive solution, which can be combined with the evidence of the enterprise's operating incomeBusiness and contract disputes in enterprisesFor plates related to property registration, you can refer to the following information for reference.Property transactions and construction projectsFor columns involving difficult evidence collection, you can seek adviceSpecial servicesTeam.

VI. Frequently Asked Questions

Q1: Without a written agreement, can we divide the assets based solely on the transfer records?

Preliminary evidence can be provided, but it needs to be combined with the amount, time, purpose, and other materials to form a chain of evidence. If the transfer amount matches the purchase or investment funds and can rule out borrowing or gift-giving, the likelihood of joint ownership is relatively high.

Q2: What is the most important piece of evidence?

Investment certificates and evidence of agreement. The investment certificates prove "who invested how much money", and the evidence of agreement proves "how the parties agreed on the shares". Combining the two can support the claim for shares, and lacking either of them can easily put one at a disadvantage.

Q3: Will the court believe what the witness says?

The court will review the evidence, but its probative value is limited. If the testimony of relatives or witnesses with a vested interest is not corroborated by other evidence, it is usually difficult to base a case solely on it. Evidence that corroborates each other, such as eyewitness accounts and written documents, is more likely to be accepted by the court.

Q4: What should I do if it's difficult to obtain evidence?

You can apply to the court for investigation and evidence collection, retrieving bank transaction records, real estate registration documents, and corporate account books, etc. You can also entrust a lawyer to collect evidence with an investigation order. If necessary, you can apply for property preservation to preserve the current status of the property.

Q5: How long does a partition lawsuit take?

The first-instance trial generally lasts three to six months, and it will be extended if it involves appraisal, expert evaluation, or multi-party litigation. Cases with well-prepared evidence and focused disputes proceed faster, so it is recommended to sort out the evidence before filing a lawsuit.

The above answer is based on the judicial practice in the Beijing area. The adjudication standards in other provinces and cities may vary. For specific cases, please refer to the local rules and evidence situation.

If you are currently facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the relevant evidence materials, to avoid missing the statutory time limits. →Legal services for inheritance·Beijing Henglu Law Firm

Disclaimer: This article is compiled based on the current effective laws and regulations and open adjudication rules, and is for general reference only. It does not constitute a formal legal opinion on specific cases. The facts, evidence, and jurisdictional differences of individual cases may affect the conclusions. If a dispute arises, please consult a practicing lawyer in time.