  The number of nucleon (NN) scaling of the directed flow $v_1$ and elliptic
flow ($v_{2}$) as well as the nuclear modification factor ($R_{cp}$) are tested
for light nuclei which are produced in 0.4$A$ GeV $^{197}Au + ^{197}Au$
collisions at different impact parameters with two different in-medium
nucleon-nucleon cross sections in the framework of an isospin-dependent quantum
molecular dynamics (IQMD) model. In that energy domain, the emission of light
nuclei can be well described by the squeeze-out phenonomenon. The results show
a nice NN scaling behavior for flow parameters $v_{1}$, $v_{2}$ and ${R_{cp}}$.
These results demonstrate that the nucleon coalescence mechanism is responsible
for nucleon-number scaling of above physical observables in squeeze-out region
in heavy-ion collisions at intermediate energy.
