Here is an objective summary of the key information in the given passage:
The passage reports that the first six months of 2023 have been the deadliest six-month period for mass killings in the United States since at least 2006. Citing Chinese media, it states there were 28 mass killings between January 1 and June 30 of this year, with all but one incident involving firearms. The passage notes these mass killings are occurring across the country, in both big cities and small towns, with victims being killed by both strangers and loved ones in both private residences and public spaces. While no analysis or commentary is provided, the tone implies concern over the rising incidence and toll of mass killings, especially those involving guns, across the U.S. in 2023 so far. The statistics and facts presented aim to highlight the severity of the ongoing gun violence crisis.