Step 3: If the quotation is not completed within 25 Ethereum block time (about 5 minutes), then the quotation data of this order will be used by the NEST system to participate in the formation of the oracle price; On the contrary, if the quotation is completely executed by the verifier, it means that the quotation data cannot represent the fair market price, and will be discarded by the system, and will not participate in the formation of the oracle price. Regardless of whether the transaction is completed or not, after 5 minutes of life cycle, the quoted miner can retrieve the quoted asset from the contract, and also get the NEST mining reward for the next quote.