  There is growing evidence that high-mass star formation and hub-filament
systems (HFS) are intricately linked. The gas kinematics along the filaments
and the forming high-mass star(s) in the central hub are in excellent agreement
with the new generation of global hierarchical high-mass star formation models.
In this paper, we present an observational investigation of a typical HFS
cloud, G310.142+0.758 (G310 hereafter) which reveals unambiguous evidence of
mass inflow from the cloud scale via the filaments onto the forming
protostar(s) at the hub conforming with the model predictions. Continuum and
molecular line data from the ATOMS and MALT90 surveys are used that cover
different spatial scales. Three filaments (with total mass $5.7\pm1.1\times
10^3~M_{\odot}$) are identified converging toward the central hub region where
several signposts of high-mass star formation have been observed. The hub
region contains a massive clump ($1280\pm260~M_{\odot}$) harbouring a central
massive core. Additionally, five outflow lobes are associated with the central
massive core implying a forming cluster. The observed large-scale, smooth and
coherent velocity gradients from the cloud down to the core scale, and the
signatures of infall motion seen in the central massive clump and core, clearly
unveil a nearly-continuous, multi-scale mass accretion/transfer process at a
similar mass infall rate of $\sim 10^{-3}~M_{\odot}~yr^{-1}$ over all scales,
feeding the central forming high-mass protostar(s) in the G310 HFS cloud.
