  Collective motions of electrons in solids are often conveniently described as
the movements of quasiparticles. Here we show that these quasiparticles can be
hierarchical. Examples are valley electrons, which move in hyperorbits within a
honeycomb lattice and forms a valley pseudospin, or the self-rotation of the
wave-packet. We demonstrate that twist can induce higher level motions of
valley electrons around the moire superlattice of bilayer systems. Such larger
scale collective movement of the valley electron, can be regarded as the
self-rotation (spin) of a higher-level quasiparticle, or what we call
super-valley electron. This quasiparticle, in principle, may have mesoscopic
size as the moire supercell can be very large. It could result in fascinating
properties like topological and chiral transport, superfluid, etc., even though
these properties are absent in the pristine untwisted system. Using twisted
antiferromagnetically coupled bilayer with honeycomb lattice as example, we
find that there forms a Haldane-like superlattice with periodically staggered
magnetic flux and the system could demonstrate quantum super-valley Hall
effect. Further analyses reveal that the super-valley electron possesses
opposite chirality when projected onto the top and bottom layer, and can be
described as two components (magnetic monopoles) of Dirac fermion entangled in
real-space, or a giant electron. Our theory opens a new way to understand the
collective motions of electrons in solid.
