Quick review in progress for Zs-A4 casing that I bought off Taobao:

Previous case: Ncase M1

Price: around rm500++ including shipping straight from Taobao (maybe cheaper if use agents)

Links: https://world.taobao.com/item/545250722223.htm

Parts:

CPU: i7 6700K
CPU cooler: Noctua NH9li
MB: ITX z170i Asus Pro Gaming
RAM: 32 GB
PSU: Corsair SFX 600W
HDD: 3x 2.5 HDD (4TB)
GPU: Gigabyte G1 1080

Pros:
1) Cheaper alternatives to Dan A4
2) Good construction
3) Light
4) Can use most large desktop components
5) The seller can actually customize the panel openings if you want

Cons:
1) No manual at all, I have to figured out how to build based on other reviews
(From certain review it seems you can get the manual from the seller but since I used google translate to buy, its going to be hard to communicate)
2) The date shipped out is longer than promised, around 3 weeks and I almost cancelled the order
3) Limited number of good cpu cooler (I delided my cpu too)
4) May need some mod for psu cable

Will update with more pics and temp data once I got the custom sleeve cable, otherwise temp for 1.3v on 4.5gh is around 40 to 45 on idle and 60 to 65 on load. Gpu is around 30 on idle and 75 on synthetic benchmark, gaming wise max around 60-70

Pics (with comparison to PS4 and Ncase M1, sorry for the poor pic ratio hahah)
<- Ncase M1

If you are new to sff, M1 is a good place to start due to more versatile in term of parts (i used aio) but for transportation, you will need to put in travel bag

If you want challenge or need to transport the desktop in bagpack like me, zs a4 is the one i prefer

And ncase m1 may have some problem if the gpu is too wide, something zs a4 have no issues with imho