$ETH $ETH I used 7 days to jump from 50u to over 1000u. On January 19th, the 8th day, this trade was originally profitable. Due to my phone suddenly freezing, I couldn't close the position in time. The subsequent market reversal led to a margin call. On the way to fix my phone, honestly, I felt very helpless. Although the amount wasn't large, it was the result of my hard work. Once it's over, it's a lesson learned. I have replaced my phone with 2 new ones. After eleven days, I started again with 100u. I will never let this happen again.