First come, first served activity, pay attention to registration. If you don’t have a habit of other tasks, it is recommended to only do the 'spot trading' task (buying and selling stablecoins, a total of 500 is enough).

ps: (Don’t do the flash exchange task, it wasted me over 1u and it’s impossible to complete, even a single transaction of 500 USD cannot complete the task.) I got caught by the flash exchange task, you guys should avoid it in advance; selling does not count towards trading volume... Those who understand flash exchange know that the exchange rate can differ by about 0.2-1.5% (it’s said there are no fees, but it’s actually deducted in the exchange rate difference).