1. Negotiation: contact the customer service department of Jia Jun Investment Platform to explain the situation and request repayment as soon as possible. Through negotiation, both parties can try to find a solution, such as installment payment or deferred repayment, to reduce the burden.
2. Legal channels: If negotiation fails, you can consider bringing a lawsuit to the people's court. In the course of litigation, relevant evidence such as investment contracts and repayment records should be provided to support the litigation request. The court will decide whether to ask for capital increase and repayment according to legal provisions and evidence.