Some time ago I pointed out that radio telescopes in the North Pole of the Earth are most likely to find information transmitted by advanced extraterrestrial civilizations. Reading the news recently, I noticed that the Canadian CHIME telescope has obtained repeated fast radio burst (FRB) signals in the past few years. The FRB 180916.J0158 + 65 detected in September 2018 has a very fixed 16-day oscillation mode. From the results of CHIME Collaboration analysis, this FRB signal is from a spiral galaxy 0.03 redshift outside the Milky Way. However, the results of my analysis also show that the signal is actually highly likely to come from the interior of the Milky Way, even stellar systems that are very close to the solar system. If the signal comes from the inside of the Milky Way, the energy required to propagate it to the solar system does not need to be so large, so it is likely that it is a signal transmitted by extraterrestrial civilizations, and it will carry a lot of extraterrestrial civilization information. It is worth our in-depth study. This article also puts forward some suggestions for improving the CHIME telescope.