The blending will be complex. Some in Brooklyn’s Chinatown, which has expanded from Sunset Park to nearby Borough Park and Bensonhurst, are wary of authority figures like the police, in part because of some Chinese immigrants’ murky legal statuses.

Image Officer Wenjian Liu Credit New York Police Department, via Associated Press

Cultural and language barriers have bred such deep insularity that many in the Liu family’s circle seemed in recent days to be only dimly aware of the city’s policing controversy.

The family members, some of whom do not speak English, have turned to Chinese police officers who have been assigned to support them, acting as linguistic and cultural translators. A community affairs officer who speaks Cantonese and a lieutenant in the department’s employee relations section who speaks Taishanese, the family’s native dialect, have been constant presences.

“They’re really private, so it’s a lot for them to take in,” said Sgt. James Ng, the president of the Asian Jade Society, an association of Asian New York police officers. “It’s literally overwhelming. It’s going to be thousands of people coming to the wake and the funeral. It’s very hard to put them through this.”

Police officers guard their home. The news media has hovered. Dignitaries including Vice President Joseph R. Biden Jr., the mayor, the police commissioner and Gov. Andrew M. Cuomo have stopped in. Friends who have spoken with the family say Officer Liu’s parents are moved, but dazed, by the attention and the high-profile visits.

The family’s only public comment came from Officer Liu’s widow, Pei Xia Chen, who married Officer Liu in September. She gave a tearful statement two days after the shooting.

One complication of the funeral planning has been picking an auspicious day under Chinese tradition. Another involves accommodating the many people who did not know Officer Liu but want to attend, prompting the Police Department to set up community viewing areas. Also, the service had to be delayed until relatives from China could obtain travel documents to the United States and fly to New York.