Thanks to Fartcoin, I turned my last 400U into 4200U in three days, just by trading 2 lots. The first lot went from 0.001117 to 0.004866. The second lot went from 0.004369 to 0.0082. The first lot was over 4 times, and the second lot was nearly double. Unfortunately, I lacked patience during the second round of buying and bought too high; otherwise, it could have reached 8000U. I'm content and will move forward steadily.