The funeral on Sunday for Wenjian Liu, who is believed to be the first Chinese-American police officer killed in the line of duty in New York, will have all the trappings that the city’s traditions demand. Thousands of officers in pressed navy blue. A Police Department flag covering the coffin. A eulogy from the mayor.

But the ceremony will also include a tradition unfamiliar to the Police Department. While the services last weekend for Officer Rafael Ramos, who died alongside Officer Liu in an ambush in Brooklyn on Dec. 20, were held at a church, Officer Liu will be honored at a funeral home with Buddhist monks praying. Mourners will burn ceremonial paper money and objects in front of his photograph — riches, according to Chinese custom, for the afterlife.

The fact that Officer Liu’s burial will include both sets of customs is proof of how diverse the city’s police ranks have become since the not-too-distant days when uniformed funerals were reliably Roman Catholic affairs. Yet it is a sign, too, of how wide the gap still is between one of the city’s oldest institutions and one of its fastest-growing immigrant communities.

“It really shows that Asians are more integrated or assimilated into the mainstream,” said Hugh Mo, a former deputy police commissioner. “One of their sons is also sacrificed, is also spilling blood.”