For cardstock of this weight (180+ gsm), you must score the fold lines first using a dried-out ballpoint pen or a dedicated scoring tool to ensure clean, sharp edges.
If the "Bell" (铃) or specific variant (1.var) includes very small, intricate parts or tight curves, a slightly thinner paper (around 160 gsm) can be easier to manipulate.
Use a matte finish rather than glossy. Matte cardstock takes glue better and won't show fingerprints or glare as much as glossy photo paper. Assembly Tips
Do you need help finding a for the Bell 1.var model, or
This is the "sweet spot" for most 3D animal models. It provides enough rigidity to maintain the structural integrity of the "Big Dog" shape while remaining flexible enough for precise folding and scoring.