Can 3D printers, such as a TronXY X1, handle 24/7 projects?
I have the same Printer - a TronXY X1, and I feel confident that with a little upgrade here and there, it can handle long prints without problems.

The most needed upgrade is a quality power brick. Mine died after some month. For replacement I have chosen a 12&nbsp;V/10&nbsp;A output one of a reputable supplier with warranty and it runs without any warming since.

Then, I did upgrade the hotend itself. The built in hotend can become leaky under long prints. I did fix this by exchanging it for a genuine e3d-v6 lite. Yes, only a lite, because this machine can only print PLA anyways for a lack of a heated bed - and there is little size one can add to the machine's print surface due to design limitations (one can only extend Y and Z to some degree without generating problems).

Tighteners for the X on the Z-axis and the bed are a very good idea to make the printer a little more reliable, resulting in less misprints or lost prints at upper heights due to wobble or layer shift.

Generally, I have printed some quite long prints (several 16 hours, one 28 hours), and with a reliable hotend and good filament feed (in once case the spool got jammed by a pen falling into it), the TronXY X1 did do its work quite good. Mind, that I tend to always print at 0.1 mm layer hight.

I do not know how 4 days of continuous load would work out, but my X1 has some summed up 2 weeks of prints under its belt by now, so... I think it can do this, but I would give it a general check (for example inspect if the bed is still settled tight) between prints.