A deposit is a certain amount paid in advance by one party to the contract to the other party in accordance with legal provisions or agreements in order to prove the establishment of the contract and guarantee the performance of the contract.
According to the above definition, which of the following is a deposit?
At an order meeting, the deputy general manager of Aetna Trading Company signed a contract for the purchase and sale of flax silk with a printing and dyeing factory, with a total contract amount of 7.8 million yuan. According to the agreement between the two sides, the printing and dyeing factory should pay Aetna Trading Company 1.56 million yuan according to 20% of the contract amount as a good faith to perform the contract, but the printing and dyeing factory was very short of funds, so it couldn't get so much money at the moment, so it pieced together to pay 1 million yuan.