  Ge et al. reported a peculiar large glitch observed from SGR 1935
recently~\citep{2022arXiv221103246G}. % Interestingly, this glitch occurred
about $3.1\pm 2.5~\rm{days}$ before FRB 200428, accompanied by a delayed spin
up (DSU) process with a timescale of $8\pm 1~\rm{days}$. % This DSU is the
first one detected from magnetars unambiguously, previously, DSU has only been
detected from large glitches of the young Crab pulsar. % Strikingly, this DSU
even resulted in torque reversal, i.e., the spin down state of SGR 1935 was
turned into a spin up one within $8\pm 1~\rm{days}$, the first case observed
from isolated neutron stars as far as we know. % What's more, the average
positive torque is consistent in value and order of magnitude with those
deduced from DSUs observed from the Crab pulsar. % The coincidences of DSU
appearance and consistent positive torque in the Crab pulsar and SGR 1935
suggest that, these DSUs have the same physical origin and should be analyzed
simultaneously. % Joint analysis on DSUs from the Crab pulsar and SGR 1935
suggests a physical origin independent of (at least not directly dependent on)
rotational parameters. % If this new DSU and torque reversal phenomena be
further confirmed and accretion be excluded convincingly, nearly all models
regarding DSU phenomenon under the framework of vortex motion should be
reconsidered, new physics will be required. % We stress that, joint analysis on
DSUs from different pulsars with different rotational parameters may provide
pivotal clue to reveal their physical origin, even neutron star equation of
state and the triggering mechanism(s) of (galactic) fast radio bursts
ultimately.
