That afternoon, I argued with customer service for half a day, and in the end, the customer service guy retorted, "You really like to nitpick," almost getting blacklisted. Looking back now, I can understand why they were headache—my questions all focused on the little details that arbitrage players wouldn't bother to investigate, but precisely these overlooked details artificially boosted my last month's earnings by 20%.

Speaking of which, I was originally a standard arbitrage enthusiast, borrowing USD 1 by staking stablecoins, then investing in financial products to earn the spread. This process was already second nature to me. Until one time when I redeemed a financial product and found that the actual amount received was less than expected. After checking for a while, I confirmed—it was either the fee deduction or a small difference in interest calculation. With my temper, I immediately opened the customer service chat and insisted on getting a clear answer.

The first key question I raised was: Does the interest on the day of redemption of the financial product count? Customer service explained that one leading exchange's USD 1 financial product follows the rule of "no interest if redeemed on the same day," but at ListaDAO, the lending interest is "calculated until the repayment day." My previous habit was to redeem the financial product in the morning and repay the loan in the afternoon, which meant I paid an extra half-day of interest unnecessarily. Later, I adjusted my strategy—redeem the financial product the night before and repay immediately the next morning. This small change saved me a decent amount of takeout money every month.

The second more outrageous discovery was: Can pledged LISTA tokens be redeemed in parts? In my previous understanding, staking LISTA was a binary choice—either redeem all or lock it up completely. So I kept staking all my LISTA. This way, I couldn't sell at a high point; I could only redeem everything, which caused me to miss several good selling opportunities. Customer service told me that partial redemption of LISTA is possible, and that was when I finally realized I could adjust my positions flexibly from then on.