Legal fruits occur continuously with time, so the obligee can calculate fruits according to time during the existence of his rights. For example, when the debtor delays, the creditor has the right to claim legal interest. However, there is a strict time limit for the acquisition of legal fruits, and the obligee must calculate and collect fruits on time during the existence of his rights.
Legal basis: Article 32 1 of People's Republic of China (PRC) Civil Code, natural fruits are obtained by the owner; If there is both the owner and the usufructuary right holder, it shall be obtained by the usufructuary right holder. Unless otherwise agreed by the parties, such agreement shall prevail. Legal fruits, if agreed by the parties, shall be obtained in accordance with the agreement; If there is no agreement or the agreement is unclear, it shall be obtained in accordance with the trading habits.