無套套利 👀 沒看懂做差價就做差價，先了解一下套利是什麼ㄅ

https://www.threads.net/@jackson89503/post/DHtRisTzLzx?xmt=AQGzIFQ8vkJxPUWdbVQoMtcSQdaHIwi_Gt8uvo0cLlxNSw