Can't tell if this a snowwolf or a sig75. But he's definitely using a hellboy dripper.
Whenever you are using an Rda, always check if your wick is wet. This is because Rda do not have a reservoir for liquid to keep it perpetually wet.
This warning is especially applicable when using Rda you are not familiar with (when friend pass you their Rda) I always have this habit of opening the top cap to check the wick if my friend pass me a Rda to taste test.
If you are experienced with using your own Rda, you will know how many drag you can get before dry hit occurs. But for those that just started to get used to Rda, remember to always check if the wick is wet.
You don't ram a dry hole do you? Same logic lah