01Record the input first, then the response

For each observation, first save the sending asset and network, receiving asset and network, sending amount, and requested mode, then record the response time, estimated received amount, returned minimum and maximum amounts, and fixed quote validity period. Keep fields that were not returned empty, and do not interpret "maximum amount not provided" as having no upper limit.

The data on this page comes from read-only quote requests to the local FeilongEX server. The queries did not enter the confirmation and order creation steps, nor did they use user addresses, sending assets, or verify actual receipt.

资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: materials, observations, and update methods ↗

02Even for the same USDT, include the network in the comparison conditions

100 USDT TRON → USDT Ethereum and 100 USDT Ethereum → USDT TRON appear to swap only the network, but the deposit network, target network, and returned fee fields differ, so they cannot be combined into one "USDT rate." The current quote also changes over time.

When preparing an actual exchange, you can open the TRC20 → ERC20 and ERC20 → TRC20 routes separately to obtain the current results again.

资料依据：FeilongEX: Explanation of current quote and order fields ↗Tether: network protocols supported by USDT ↗

03Floating and fixed responses to the same input cannot be mixed into one conclusion

The three USDT Ethereum → BTC samples around 12:02 UTC used the same sending amount. The two floating responses had the same estimated received amount, but the minimum amount changed slightly; the fixed response differed in estimated received amount, minimum amount, maximum amount, and validity period fields. The three records describe only the responses at that time and do not prove which mode is better long term.

Before choosing a mode, you can read the floating and fixed rate guide; when comparing other services, fix the conditions according to the same-parameter quote comparison method.

资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: fixed rate explanation ↗

04Read the minimum amount, maximum amount, and estimated arrival separately

The minimum amount indicates the sending lower limit given by this response, not the example quantity on the page. If the maximum amount is empty, it only means that the response did not provide that value; before creating an order, the current route's returned value should still govern. The estimated received amount is also not a wallet balance or payment proof.

The complete redacted record can be downloaded as a JSON data file. The file retains empty values and method limitations for checking the main text, but it cannot be imported into a wallet for payment.

资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: materials, observations, and update methods ↗

05What these 9 samples cannot prove

The sample covers only the same day and cannot calculate long-term average prices, execution success rates, typical arrival speeds, or minimum service. It also does not measure external fees generated by the sending wallet, exchange withdrawal, or user-initiated transfers.

The data contains no real order numbers, addresses, transaction hashes, or fund flows, so it cannot be used as a case of completed exchange. FeilongEX does not claim "zero fees," "best rate," or guarantee a certain received amount based on these samples.

资料依据：FeilongEX: materials, observations, and update methods ↗

06Actual exchange uses only the current quote and this order's information

Historical samples are suitable for learning the fields and comparison method. When preparing to pay, open the exact route, enter your own sending amount, check the current minimum amount, estimated receipt, mode, and countdown, and then pay only to the deposit information shown for this order.

If the quote has changed or expired and you have not yet sent funds, you can obtain a new one; if funds have already been sent or the status is unclear, keep the original order and check its progress, and do not use a new quote to explain an old order.

资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: order stages and progress inquiries ↗

FAQ

Are these samples FeilongEX actual transaction prices?

No. They are read-only quote responses; no order was created, no funds were sent, and no final arrival was verified.

Why do the same 100 USDT get different results?

Asset network, receiving asset, mode, and query time all affect the response; when comparing, all conditions must be fixed.

Can I pay directly according to the address or amount in the table?

No. The data file does not contain deposit addresses, and historical amounts are no longer valid; actual payment must use the current order page.