A small brand is likely to use a very inexpensive Miyota automatic movement. They run well enough but will not be very accurate.
The cheapest Chinese mechanical watches use movements you've never heard of, and some are unbranded so you don't know what you bought. These can be ok or worthless junk. I'm talking about $35 watches.
At the next step up the quality ladder, you may be offered a Seagull movement or a Miyota movement which costs more. A micro-brand I've bought is Corgeut: they sell the same watch with a Seagull movement for $70 or a Miyota movement for $80. The Seagull movement is an ST16; the Miyota movement is an 82XX, nowadays usually 8215. These are old-fashioned entry level movements with design peculiarities some regard as problems related to the second sweep hand, which is indirectly driven.
The Miyota 82XX "stutters": if you bang the watch or shake it, the second sweep may freeze for one second and then jump ahead two seconds. I own old Citizen watches with this movement (Miyota is part of the Citizen group of companies). I've never noticed this but I'm sure they stutter. They hand wind but they don't hack.
The Seagull ST16 copies Miyota's train layout, but its winding mechanism uses Seiko's "magic lever." It has a second stutter like Miyota 82XX. It hand winds and hacks, and hacking adds another peculiarity. You need to set and release the second hand gently but firmly with a precise touch. If you're off, the second hand jumps several seconds when released. My watch jumps 2½ or 3 seconds. I set it at 7:29:57 and release the second hand at 7:30. That's close enough.
To repeat, these are old and old-fashioned entry level movements. Entry level Swiss movements of that generation had indirect drive and similar problems.
If you're a careful shopper, you'll get better a better movement by paying more. In a $100 watch, look for a Seagull ST17 or a Seiko NH35 movement. The Seiko is a modern entry level movement that hand winds and hacks. Seagull ST25XX series and Miyota 9000 series are better and the watches cost more. I own a Parnis watch with a Miyota 9100 movement.
Day, date, month, power reserve, and a 24 hour sub-dial: that's a lot of complications for a Japanese movement. Mine gains 8 seconds per day. The one you usually see is Miyota 9015 and that's pretty much top-of-the-line for Chinese watches in the $200+ price range. You'll pay more for a Sellita SW200, a Swiss copy of ETA's 2824, but it isn't a better movement.