Zhou and Li are both shareholders of a certain company. After negotiation, Zhou gave Li 300,000 yuan, and Li withdrew from the company with the consent of other shareholders. At that time, Zhou only paid 200,000 yuan of the equity transfer payment, and the remaining 100,000 yuan was unpaid, for which Zhou issued an IOU to Li, converting it into a debt. Due to Zhou's failure to repay in time, Li filed a lawsuit for private lending in the Xicheng District Court of Beijing, and the court ruled that the defendant must repay the debt.
In 2024, Zhou filed a lawsuit in the Chaoyang District Court of Beijing, requesting Li to return the equity transfer payment, arguing that Li refused to cooperate with the equity registration process, which constitutes a breach of contract.

Case Analysis:
Due to Zhou's debt to Li regarding the equity transfer, the plaintiff Zhou was unable to pay the equity transfer amount in one lump sum, having only paid 200,000 yuan and still owing 100,000 yuan. Later, Zhou negotiated with Li to issue an IOU, treating the equity transfer amount as a debt. Since Zhou failed to pay the amount to Li as agreed, Li, as the plaintiff, filed a lawsuit in the People's Court of Xicheng District, Beijing. The court ruled that Zhou should repay Li. Zhou was dissatisfied and appealed to the Beijing Second Intermediate People's Court, which dismissed Zhou's appeal and upheld the original ruling.
The case initiated by Zhou has been bound by the effective judgment, and the plaintiff Zhou's initiation of this case constitutes a repeated lawsuit, which should be dismissed according to law. According to Article 127, Paragraph 1, Item (5) of the Civil Procedure Law (The People's Court shall handle the following lawsuits in different circumstances: ......(5) For cases where the judgment, ruling, or mediation document has already taken legal effect, and the parties file a lawsuit again, the plaintiff shall be informed to apply for retrial, except for the ruling allowing withdrawal of the lawsuit; ......), and Article 247 of the Interpretation of the Supreme People's Court on the Application of the Civil Procedure Law of the People's Republic of China (If the parties file a lawsuit again on matters that have already been litigated during the litigation process or after the judgment takes effect, and meet the following conditions, it constitutes a repeated lawsuit: (1) The parties in the subsequent lawsuit are the same as those in the previous lawsuit; (2) The subject matter of the subsequent lawsuit is the same as that of the previous lawsuit; (3) The claims in the subsequent lawsuit are the same as those in the previous lawsuit, or the claims in the subsequent lawsuit essentially negate the judgment results of the previous lawsuit. If the parties file a repeated lawsuit, the ruling shall not be accepted; if it has been accepted, the ruling shall dismiss the lawsuit, unless otherwise provided by law or judicial interpretation.)
In summary, Zhou's initiation of this case falls under the circumstances where the parties are the same, the nature of the subject matter of the lawsuit is the same, and the claims in the subsequent lawsuit essentially negate the judgment results of the previous lawsuit. Therefore, it should be ruled to dismiss the plaintiff Zhou's lawsuit according to the above legal provisions.

Court Ruling:
The Beijing Chaoyang District People's Court ruled to dismiss Zhou's lawsuit in the first instance.