  On April 27, 2020, the soft gamma ray repeater SGR J1935+2154 entered its
intense outburst episode again. Insight-HXMT carried out about one month
observation of the source. A total number of 75 bursts were detected during
this activity episode by Insight-HXMT, and persistent emission data were also
accumulated. We report on the spin period search result and the phase
distribution of burst start times and burst photon arrival times of the
Insight-HXMT high energy detectors and Fermi Gamma-ray Burst Monitor (GBM). We
find that the distribution of burst start times is uniform within its spin
phase for both Insight-HXMT and Fermi-GBM observations, whereas the phase
distribution of burst photons is related to the type of a burst's energy
spectrum. The bursts with the same spectrum have different distribution
characteristics in the initial and decay episodes for the activity of magnetar
SGR J1935+2154.
